diff --git a/README.md b/README.md
index 3040e5c8..cf74fae1 100644
--- a/README.md
+++ b/README.md
@@ -30,10 +30,10 @@ Several storage backends are supported: local filesystem, encrypted local filesy
 - Per-user authentication methods.
 - [Two-factor authentication](./docs/howto/two-factor-authentication.md) based on time-based one time passwords (RFC 6238) which works with Authy, Google Authenticator and other compatible apps.
 - Simplified user administrations using [groups](./docs/groups.md).
-- Custom authentication via external programs/HTTP API.
+- Custom authentication via [external programs/HTTP API](./docs/external-auth.md).
 - Web Client and Web Admin user interfaces support [OpenID Connect](https://openid.net/connect/) authentication and so they can be integrated with identity providers such as [Keycloak](https://www.keycloak.org/). You can find more details [here](./docs/oidc.md).
 - [Data At Rest Encryption](./docs/dare.md).
-- Dynamic user modification before login via external programs/HTTP API.
+- Dynamic user modification before login via [external programs/HTTP API](./docs/dynamic-user-mod.md).
 - Quota support: accounts can have individual disk quota expressed as max total size and/or max number of files.
 - Bandwidth throttling, with separate settings for upload and download and overrides based on the client's IP address.
 - Data transfer bandwidth limits, with total limit or separate settings for uploads and downloads and overrides based on the client's IP address. Limits can be reset using the REST API.
diff --git a/config/config.go b/config/config.go
index ce8a4b6a..3658d375 100644
--- a/config/config.go
+++ b/config/config.go
@@ -310,7 +310,6 @@ func Init() {
 			},
 			ExternalAuthHook:   "",
 			ExternalAuthScope:  0,
-			CredentialsPath:    "credentials",
 			PreLoginHook:       "",
 			PostLoginHook:      "",
 			PostLoginScope:     0,
@@ -691,12 +690,6 @@ func resetInvalidConfigs() {
 		logger.Warn(logSender, "", "Non-fatal configuration error: %v", warn)
 		logger.WarnToConsole("Non-fatal configuration error: %v", warn)
 	}
-	if globalConf.ProviderConf.CredentialsPath == "" {
-		warn := "invalid credentials path, reset to \"credentials\""
-		globalConf.ProviderConf.CredentialsPath = "credentials"
-		logger.Warn(logSender, "", "Non-fatal configuration error: %v", warn)
-		logger.WarnToConsole("Non-fatal configuration error: %v", warn)
-	}
 	if globalConf.Common.DefenderConfig.Enabled && globalConf.Common.DefenderConfig.Driver == common.DefenderDriverProvider {
 		if !globalConf.ProviderConf.IsDefenderSupported() {
 			warn := fmt.Sprintf("provider based defender is not supported with data provider %#v, "+
@@ -1853,7 +1846,6 @@ func setViperDefaults() {
 	viper.SetDefault("data_provider.actions.hook", globalConf.ProviderConf.Actions.Hook)
 	viper.SetDefault("data_provider.external_auth_hook", globalConf.ProviderConf.ExternalAuthHook)
 	viper.SetDefault("data_provider.external_auth_scope", globalConf.ProviderConf.ExternalAuthScope)
-	viper.SetDefault("data_provider.credentials_path", globalConf.ProviderConf.CredentialsPath)
 	viper.SetDefault("data_provider.pre_login_hook", globalConf.ProviderConf.PreLoginHook)
 	viper.SetDefault("data_provider.post_login_hook", globalConf.ProviderConf.PostLoginHook)
 	viper.SetDefault("data_provider.post_login_scope", globalConf.ProviderConf.PostLoginScope)
diff --git a/config/config_test.go b/config/config_test.go
index c9228a00..3322b9f4 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -184,29 +184,6 @@ func TestInvalidExternalAuthScope(t *testing.T) {
 	assert.NoError(t, err)
 }
 
-func TestInvalidCredentialsPath(t *testing.T) {
-	reset()
-
-	configDir := ".."
-	confName := tempConfigName + ".json"
-	configFilePath := filepath.Join(configDir, confName)
-	err := config.LoadConfig(configDir, "")
-	assert.NoError(t, err)
-	providerConf := config.GetProviderConf()
-	providerConf.CredentialsPath = ""
-	c := make(map[string]dataprovider.Config)
-	c["data_provider"] = providerConf
-	jsonConf, err := json.Marshal(c)
-	assert.NoError(t, err)
-	err = os.WriteFile(configFilePath, jsonConf, os.ModePerm)
-	assert.NoError(t, err)
-	err = config.LoadConfig(configDir, confName)
-	assert.NoError(t, err)
-	assert.Equal(t, "credentials", config.GetProviderConf().CredentialsPath)
-	err = os.Remove(configFilePath)
-	assert.NoError(t, err)
-}
-
 func TestInvalidProxyProtocol(t *testing.T) {
 	reset()
 
diff --git a/dataprovider/bolt.go b/dataprovider/bolt.go
index 9cc48e12..998893b6 100644
--- a/dataprovider/bolt.go
+++ b/dataprovider/bolt.go
@@ -1954,18 +1954,11 @@ func (p *BoltProvider) migrateDatabase() error {
 	case version == boltDatabaseVersion:
 		providerLog(logger.LevelDebug, "bolt database is up to date, current version: %v", version)
 		return ErrNoInitRequired
-	case version < 15:
+	case version < 19:
 		err = fmt.Errorf("database version %v is too old, please see the upgrading docs", version)
 		providerLog(logger.LevelError, "%v", err)
 		logger.ErrorToConsole("%v", err)
 		return err
-	case version == 15, version == 16, version == 17, version == 18:
-		logger.InfoToConsole(fmt.Sprintf("updating database version: %v -> 19", version))
-		providerLog(logger.LevelInfo, "updating database version: %v -> 19", version)
-		if err = importGCSCredentials(); err != nil {
-			return err
-		}
-		return updateBoltDatabaseVersion(p.dbHandle, 19)
 	default:
 		if version > boltDatabaseVersion {
 			providerLog(logger.LevelError, "database version %v is newer than the supported one: %v", version,
@@ -1987,8 +1980,6 @@ func (p *BoltProvider) revertDatabase(targetVersion int) error {
 		return errors.New("current version match target version, nothing to do")
 	}
 	switch dbVersion.Version {
-	case 16, 17, 18, 19:
-		return updateBoltDatabaseVersion(p.dbHandle, 15)
 	default:
 		return fmt.Errorf("database version not handled: %v", dbVersion.Version)
 	}
@@ -2405,7 +2396,7 @@ func getBoltDatabaseVersion(dbHandle *bolt.DB) (schemaVersion, error) {
 		v := bucket.Get(dbVersionKey)
 		if v == nil {
 			dbVersion = schemaVersion{
-				Version: 15,
+				Version: 19,
 			}
 			return nil
 		}
@@ -2414,7 +2405,7 @@ func getBoltDatabaseVersion(dbHandle *bolt.DB) (schemaVersion, error) {
 	return dbVersion, err
 }
 
-func updateBoltDatabaseVersion(dbHandle *bolt.DB, version int) error {
+/*func updateBoltDatabaseVersion(dbHandle *bolt.DB, version int) error {
 	err := dbHandle.Update(func(tx *bolt.Tx) error {
 		bucket := tx.Bucket(dbVersionBucket)
 		if bucket == nil {
@@ -2430,4 +2421,4 @@ func updateBoltDatabaseVersion(dbHandle *bolt.DB, version int) error {
 		return bucket.Put(dbVersionKey, buf)
 	})
 	return err
-}
+}*/
diff --git a/dataprovider/dataprovider.go b/dataprovider/dataprovider.go
index ef977d2e..0c1cd961 100644
--- a/dataprovider/dataprovider.go
+++ b/dataprovider/dataprovider.go
@@ -155,7 +155,6 @@ var (
 	unixPwdPrefixes              = []string{md5cryptPwdPrefix, md5cryptApr1PwdPrefix, sha512cryptPwdPrefix}
 	sharedProviders              = []string{PGSQLDataProviderName, MySQLDataProviderName, CockroachDataProviderName}
 	logSender                    = "dataprovider"
-	credentialsDirPath           string
 	sqlTableUsers                = "users"
 	sqlTableFolders              = "folders"
 	sqlTableFoldersMapping       = "folders_mapping"
@@ -322,10 +321,6 @@ type Config struct {
 	// you can combine the scopes, for example 3 means password and public key, 5 password and keyboard
 	// interactive and so on
 	ExternalAuthScope int `json:"external_auth_scope" mapstructure:"external_auth_scope"`
-	// CredentialsPath defines the directory for storing user provided credential files such as
-	// Google Cloud Storage credentials. It can be a path relative to the config dir or an
-	// absolute path
-	CredentialsPath string `json:"credentials_path" mapstructure:"credentials_path"`
 	// Absolute path to an external program or an HTTP URL to invoke just before the user login.
 	// This program/URL allows to modify or create the user trying to login.
 	// It is useful if you have users with dynamic fields to update just before the login.
@@ -719,8 +714,6 @@ func Initialize(cnf Config, basePath string, checkAdmins bool) error {
 	if cnf.BackupsPath == "" {
 		return fmt.Errorf("required directory is invalid, backup path %#v", cnf.BackupsPath)
 	}
-	credentialsDirPath = getConfigPath(config.CredentialsPath, basePath)
-	vfs.SetCredentialsDirPath(credentialsDirPath)
 
 	if err = initializeHashingAlgo(&cnf); err != nil {
 		return err
@@ -867,13 +860,6 @@ func checkDefaultAdmin() error {
 func InitializeDatabase(cnf Config, basePath string) error {
 	config = cnf
 
-	if filepath.IsAbs(config.CredentialsPath) {
-		credentialsDirPath = config.CredentialsPath
-	} else {
-		credentialsDirPath = filepath.Join(basePath, config.CredentialsPath)
-	}
-	vfs.SetCredentialsDirPath(credentialsDirPath)
-
 	if err := initializeHashingAlgo(&cnf); err != nil {
 		return err
 	}
@@ -893,12 +879,6 @@ func InitializeDatabase(cnf Config, basePath string) error {
 func RevertDatabase(cnf Config, basePath string, targetVersion int) error {
 	config = cnf
 
-	if filepath.IsAbs(config.CredentialsPath) {
-		credentialsDirPath = config.CredentialsPath
-	} else {
-		credentialsDirPath = filepath.Join(basePath, config.CredentialsPath)
-	}
-
 	err := createProvider(basePath)
 	if err != nil {
 		return err
@@ -914,12 +894,6 @@ func RevertDatabase(cnf Config, basePath string, targetVersion int) error {
 func ResetDatabase(cnf Config, basePath string) error {
 	config = cnf
 
-	if filepath.IsAbs(config.CredentialsPath) {
-		credentialsDirPath = config.CredentialsPath
-	} else {
-		credentialsDirPath = filepath.Join(basePath, config.CredentialsPath)
-	}
-
 	if err := createProvider(basePath); err != nil {
 		return err
 	}
@@ -3650,89 +3624,6 @@ func isLastActivityRecent(lastActivity int64, minDelay time.Duration) bool {
 	return diff < minDelay
 }
 
-func addGCSCredentialsToFolder(folder *vfs.BaseVirtualFolder) (bool, error) {
-	if folder.FsConfig.Provider != sdk.GCSFilesystemProvider {
-		return false, nil
-	}
-	if folder.FsConfig.GCSConfig.AutomaticCredentials > 0 {
-		return false, nil
-	}
-	if folder.FsConfig.GCSConfig.Credentials.IsValid() {
-		return false, nil
-	}
-	cred, err := os.ReadFile(folder.GetGCSCredentialsFilePath())
-	if err != nil {
-		return false, err
-	}
-	err = json.Unmarshal(cred, &folder.FsConfig.GCSConfig.Credentials)
-	if err != nil {
-		return false, err
-	}
-	return true, nil
-}
-
-func addGCSCredentialsToUser(user *User) (bool, error) {
-	if user.FsConfig.Provider != sdk.GCSFilesystemProvider {
-		return false, nil
-	}
-	if user.FsConfig.GCSConfig.AutomaticCredentials > 0 {
-		return false, nil
-	}
-	if user.FsConfig.GCSConfig.Credentials.IsValid() {
-		return false, nil
-	}
-	cred, err := os.ReadFile(user.GetGCSCredentialsFilePath())
-	if err != nil {
-		return false, err
-	}
-	err = json.Unmarshal(cred, &user.FsConfig.GCSConfig.Credentials)
-	if err != nil {
-		return false, err
-	}
-	return true, nil
-}
-
-func importGCSCredentials() error {
-	folders, err := provider.dumpFolders()
-	if err != nil {
-		return fmt.Errorf("unable to get folders: %w", err)
-	}
-	for idx := range folders {
-		folder := &folders[idx]
-		added, err := addGCSCredentialsToFolder(folder)
-		if err != nil {
-			return fmt.Errorf("unable to add GCS credentials to folder %#v: %w", folder.Name, err)
-		}
-		if added {
-			logger.InfoToConsole("importing GCS credentials for folder %#v", folder.Name)
-			providerLog(logger.LevelInfo, "importing GCS credentials for folder %#v", folder.Name)
-			if err = provider.updateFolder(folder); err != nil {
-				return fmt.Errorf("unable to update folder %#v: %w", folder.Name, err)
-			}
-		}
-	}
-
-	users, err := provider.dumpUsers()
-	if err != nil {
-		return fmt.Errorf("unable to get users: %w", err)
-	}
-	for idx := range users {
-		user := &users[idx]
-		added, err := addGCSCredentialsToUser(user)
-		if err != nil {
-			return fmt.Errorf("unable to add GCS credentials to user %#v: %w", user.Username, err)
-		}
-		if added {
-			logger.InfoToConsole("importing GCS credentials for user %#v", user.Username)
-			providerLog(logger.LevelInfo, "importing GCS credentials for user %#v", user.Username)
-			if err = provider.updateUser(user); err != nil {
-				return fmt.Errorf("unable to update user %#v: %w", user.Username, err)
-			}
-		}
-	}
-	return nil
-}
-
 func getConfigPath(name, configDir string) string {
 	if !util.IsFileInputValid(name) {
 		return ""
diff --git a/dataprovider/mysql.go b/dataprovider/mysql.go
index 5521ddb1..f0d52168 100644
--- a/dataprovider/mysql.go
+++ b/dataprovider/mysql.go
@@ -42,6 +42,11 @@ const (
 		"`description` varchar(512) NULL, `password` varchar(255) NOT NULL, `email` varchar(255) NULL, `status` integer NOT NULL, " +
 		"`permissions` longtext NOT NULL, `filters` longtext NULL, `additional_info` longtext NULL, `last_login` bigint NOT NULL, " +
 		"`created_at` bigint NOT NULL, `updated_at` bigint NOT NULL);" +
+		"CREATE TABLE `{{active_transfers}}` (`id` bigint AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
+		"`connection_id` varchar(100) NOT NULL, `transfer_id` bigint NOT NULL, `transfer_type` integer NOT NULL, " +
+		"`username` varchar(255) NOT NULL, `folder_name` varchar(255) NULL, `ip` varchar(50) NOT NULL, " +
+		"`truncated_size` bigint NOT NULL, `current_ul_size` bigint NOT NULL, `current_dl_size` bigint NOT NULL, " +
+		"`created_at` bigint NOT NULL, `updated_at` bigint NOT NULL);" +
 		"CREATE TABLE `{{defender_hosts}}` (`id` bigint AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
 		"`ip` varchar(50) NOT NULL UNIQUE, `ban_time` bigint NOT NULL, `updated_at` bigint NOT NULL);" +
 		"CREATE TABLE `{{defender_events}}` (`id` bigint AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
@@ -51,6 +56,11 @@ const (
 		"CREATE TABLE `{{folders}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `name` varchar(255) NOT NULL UNIQUE, " +
 		"`description` varchar(512) NULL, `path` longtext NULL, `used_quota_size` bigint NOT NULL, " +
 		"`used_quota_files` integer NOT NULL, `last_quota_update` bigint NOT NULL, `filesystem` longtext NULL);" +
+		"CREATE TABLE `{{groups}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
+		"`name` varchar(255) NOT NULL UNIQUE, `description` varchar(512) NULL, `created_at` bigint NOT NULL, " +
+		"`updated_at` bigint NOT NULL, `user_settings` longtext NULL);" +
+		"CREATE TABLE `{{shared_sessions}}` (`key` varchar(128) NOT NULL PRIMARY KEY, " +
+		"`data` longtext NOT NULL, `type` integer NOT NULL, `timestamp` bigint NOT NULL);" +
 		"CREATE TABLE `{{users}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `username` varchar(255) NOT NULL UNIQUE, " +
 		"`status` integer NOT NULL, `expiration_date` bigint NOT NULL, `description` varchar(512) NULL, `password` longtext NULL, " +
 		"`public_keys` longtext NULL, `home_dir` longtext NOT NULL, `uid` bigint NOT NULL, `gid` bigint NOT NULL, " +
@@ -58,12 +68,33 @@ const (
 		"`permissions` longtext NOT NULL, `used_quota_size` bigint NOT NULL, `used_quota_files` integer NOT NULL, " +
 		"`last_quota_update` bigint NOT NULL, `upload_bandwidth` integer NOT NULL, `download_bandwidth` integer NOT NULL, " +
 		"`last_login` bigint NOT NULL, `filters` longtext NULL, `filesystem` longtext NULL, `additional_info` longtext NULL, " +
-		"`created_at` bigint NOT NULL, `updated_at` bigint NOT NULL, `email` varchar(255) NULL);" +
-		"CREATE TABLE `{{folders_mapping}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `virtual_path` longtext NOT NULL, " +
+		"`created_at` bigint NOT NULL, `updated_at` bigint NOT NULL, `email` varchar(255) NULL, " +
+		"`upload_data_transfer` integer NOT NULL, `download_data_transfer` integer NOT NULL, " +
+		"`total_data_transfer` integer NOT NULL, `used_upload_data_transfer` integer NOT NULL, " +
+		"`used_download_data_transfer` integer NOT NULL);" +
+		"CREATE TABLE `{{groups_folders_mapping}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
+		"`group_id` integer NOT NULL, `folder_id` integer NOT NULL, " +
+		"`virtual_path` longtext NOT NULL, `quota_size` bigint NOT NULL, `quota_files` integer NOT NULL);" +
+		"CREATE TABLE `{{users_groups_mapping}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
+		"`user_id` integer NOT NULL, `group_id` integer NOT NULL, `group_type` integer NOT NULL);" +
+		"CREATE TABLE `{{users_folders_mapping}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `virtual_path` longtext NOT NULL, " +
 		"`quota_size` bigint NOT NULL, `quota_files` integer NOT NULL, `folder_id` integer NOT NULL, `user_id` integer NOT NULL);" +
-		"ALTER TABLE `{{folders_mapping}}` ADD CONSTRAINT `{{prefix}}unique_mapping` UNIQUE (`user_id`, `folder_id`);" +
-		"ALTER TABLE `{{folders_mapping}}` ADD CONSTRAINT `{{prefix}}folders_mapping_folder_id_fk_folders_id` FOREIGN KEY (`folder_id`) REFERENCES `{{folders}}` (`id`) ON DELETE CASCADE;" +
-		"ALTER TABLE `{{folders_mapping}}` ADD CONSTRAINT `{{prefix}}folders_mapping_user_id_fk_users_id` FOREIGN KEY (`user_id`) REFERENCES `{{users}}` (`id`) ON DELETE CASCADE;" +
+		"ALTER TABLE `{{users_folders_mapping}}` ADD CONSTRAINT `{{prefix}}unique_user_folder_mapping` " +
+		"UNIQUE (`user_id`, `folder_id`);" +
+		"ALTER TABLE `{{users_folders_mapping}}` ADD CONSTRAINT `{{prefix}}users_folders_mapping_user_id_fk_users_id` " +
+		"FOREIGN KEY (`user_id`) REFERENCES `{{users}}` (`id`) ON DELETE CASCADE;" +
+		"ALTER TABLE `{{users_folders_mapping}}` ADD CONSTRAINT `{{prefix}}users_folders_mapping_folder_id_fk_folders_id` " +
+		"FOREIGN KEY (`folder_id`) REFERENCES `{{folders}}` (`id`) ON DELETE CASCADE;" +
+		"ALTER TABLE `{{users_groups_mapping}}` ADD CONSTRAINT `{{prefix}}unique_user_group_mapping` UNIQUE (`user_id`, `group_id`);" +
+		"ALTER TABLE `{{groups_folders_mapping}}` ADD CONSTRAINT `{{prefix}}unique_group_folder_mapping` UNIQUE (`group_id`, `folder_id`);" +
+		"ALTER TABLE `{{users_groups_mapping}}` ADD CONSTRAINT `{{prefix}}users_groups_mapping_group_id_fk_groups_id` " +
+		"FOREIGN KEY (`group_id`) REFERENCES `{{groups}}` (`id`) ON DELETE NO ACTION;" +
+		"ALTER TABLE `{{users_groups_mapping}}` ADD CONSTRAINT `{{prefix}}users_groups_mapping_user_id_fk_users_id` " +
+		"FOREIGN KEY (`user_id`) REFERENCES `{{users}}` (`id`) ON DELETE CASCADE;" +
+		"ALTER TABLE `{{groups_folders_mapping}}` ADD CONSTRAINT `{{prefix}}groups_folders_mapping_folder_id_fk_folders_id` " +
+		"FOREIGN KEY (`folder_id`) REFERENCES `{{folders}}` (`id`) ON DELETE CASCADE;" +
+		"ALTER TABLE `{{groups_folders_mapping}}` ADD CONSTRAINT `{{prefix}}groups_folders_mapping_group_id_fk_groups_id` " +
+		"FOREIGN KEY (`group_id`) REFERENCES `{{groups}}` (`id`) ON DELETE CASCADE;" +
 		"CREATE TABLE `{{shares}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
 		"`share_id` varchar(60) NOT NULL UNIQUE, `name` varchar(255) NOT NULL, `description` varchar(512) NULL, " +
 		"`scope` integer NOT NULL, `paths` longtext NOT NULL, `created_at` bigint NOT NULL, " +
@@ -81,83 +112,13 @@ const (
 		"CREATE INDEX `{{prefix}}defender_hosts_updated_at_idx` ON `{{defender_hosts}}` (`updated_at`);" +
 		"CREATE INDEX `{{prefix}}defender_hosts_ban_time_idx` ON `{{defender_hosts}}` (`ban_time`);" +
 		"CREATE INDEX `{{prefix}}defender_events_date_time_idx` ON `{{defender_events}}` (`date_time`);" +
-		"INSERT INTO {{schema_version}} (version) VALUES (15);"
-	mysqlV16SQL = "ALTER TABLE `{{users}}` ADD COLUMN `download_data_transfer` integer DEFAULT 0 NOT NULL;" +
-		"ALTER TABLE `{{users}}` ALTER COLUMN `download_data_transfer` DROP DEFAULT;" +
-		"ALTER TABLE `{{users}}` ADD COLUMN `total_data_transfer` integer DEFAULT 0 NOT NULL;" +
-		"ALTER TABLE `{{users}}` ALTER COLUMN `total_data_transfer` DROP DEFAULT;" +
-		"ALTER TABLE `{{users}}` ADD COLUMN `upload_data_transfer` integer DEFAULT 0 NOT NULL;" +
-		"ALTER TABLE `{{users}}` ALTER COLUMN `upload_data_transfer` DROP DEFAULT;" +
-		"ALTER TABLE `{{users}}` ADD COLUMN `used_download_data_transfer` integer DEFAULT 0 NOT NULL;" +
-		"ALTER TABLE `{{users}}` ALTER COLUMN `used_download_data_transfer` DROP DEFAULT;" +
-		"ALTER TABLE `{{users}}` ADD COLUMN `used_upload_data_transfer` integer DEFAULT 0 NOT NULL;" +
-		"ALTER TABLE `{{users}}` ALTER COLUMN `used_upload_data_transfer` DROP DEFAULT;" +
-		"CREATE TABLE `{{active_transfers}}` (`id` bigint AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
-		"`connection_id` varchar(100) NOT NULL, `transfer_id` bigint NOT NULL, `transfer_type` integer NOT NULL, " +
-		"`username` varchar(255) NOT NULL, `folder_name` varchar(255) NULL, `ip` varchar(50) NOT NULL, " +
-		"`truncated_size` bigint NOT NULL, `current_ul_size` bigint NOT NULL, `current_dl_size` bigint NOT NULL, " +
-		"`created_at` bigint NOT NULL, `updated_at` bigint NOT NULL);" +
 		"CREATE INDEX `{{prefix}}active_transfers_connection_id_idx` ON `{{active_transfers}}` (`connection_id`);" +
 		"CREATE INDEX `{{prefix}}active_transfers_transfer_id_idx` ON `{{active_transfers}}` (`transfer_id`);" +
-		"CREATE INDEX `{{prefix}}active_transfers_updated_at_idx` ON `{{active_transfers}}` (`updated_at`);"
-	mysqlV16DownSQL = "ALTER TABLE `{{users}}` DROP COLUMN `used_upload_data_transfer`;" +
-		"ALTER TABLE `{{users}}` DROP COLUMN `used_download_data_transfer`;" +
-		"ALTER TABLE `{{users}}` DROP COLUMN `upload_data_transfer`;" +
-		"ALTER TABLE `{{users}}` DROP COLUMN `total_data_transfer`;" +
-		"ALTER TABLE `{{users}}` DROP COLUMN `download_data_transfer`;" +
-		"DROP TABLE `{{active_transfers}}` CASCADE;"
-	mysqlV17SQL = "CREATE TABLE `{{groups}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
-		"`name` varchar(255) NOT NULL UNIQUE, `description` varchar(512) NULL, `created_at` bigint NOT NULL, " +
-		"`updated_at` bigint NOT NULL, `user_settings` longtext NULL);" +
-		"CREATE TABLE `{{groups_folders_mapping}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
-		"`group_id` integer NOT NULL, `folder_id` integer NOT NULL, " +
-		"`virtual_path` longtext NOT NULL, `quota_size` bigint NOT NULL, `quota_files` integer NOT NULL);" +
-		"CREATE TABLE `{{users_groups_mapping}}` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, " +
-		"`user_id` integer NOT NULL, `group_id` integer NOT NULL, `group_type` integer NOT NULL);" +
-		"ALTER TABLE `{{folders_mapping}}` DROP FOREIGN KEY `{{prefix}}folders_mapping_folder_id_fk_folders_id`;" +
-		"ALTER TABLE `{{folders_mapping}}` DROP FOREIGN KEY `{{prefix}}folders_mapping_user_id_fk_users_id`;" +
-		"ALTER TABLE `{{folders_mapping}}` DROP INDEX `{{prefix}}unique_mapping`;" +
-		"RENAME TABLE `{{folders_mapping}}` TO `{{users_folders_mapping}}`;" +
-		"ALTER TABLE `{{users_folders_mapping}}` ADD CONSTRAINT `{{prefix}}unique_user_folder_mapping` " +
-		"UNIQUE (`user_id`, `folder_id`);" +
-		"ALTER TABLE `{{users_folders_mapping}}` ADD CONSTRAINT `{{prefix}}users_folders_mapping_user_id_fk_users_id` " +
-		"FOREIGN KEY (`user_id`) REFERENCES `{{users}}` (`id`) ON DELETE CASCADE;" +
-		"ALTER TABLE `{{users_folders_mapping}}` ADD CONSTRAINT `{{prefix}}users_folders_mapping_folder_id_fk_folders_id` " +
-		"FOREIGN KEY (`folder_id`) REFERENCES `{{folders}}` (`id`) ON DELETE CASCADE;" +
-		"ALTER TABLE `{{users_groups_mapping}}` ADD CONSTRAINT `{{prefix}}unique_user_group_mapping` UNIQUE (`user_id`, `group_id`);" +
-		"ALTER TABLE `{{groups_folders_mapping}}` ADD CONSTRAINT `{{prefix}}unique_group_folder_mapping` UNIQUE (`group_id`, `folder_id`);" +
-		"ALTER TABLE `{{users_groups_mapping}}` ADD CONSTRAINT `{{prefix}}users_groups_mapping_group_id_fk_groups_id` " +
-		"FOREIGN KEY (`group_id`) REFERENCES `{{groups}}` (`id`) ON DELETE NO ACTION;" +
-		"ALTER TABLE `{{users_groups_mapping}}` ADD CONSTRAINT `{{prefix}}users_groups_mapping_user_id_fk_users_id` " +
-		"FOREIGN KEY (`user_id`) REFERENCES `{{users}}` (`id`) ON DELETE CASCADE;" +
-		"ALTER TABLE `{{groups_folders_mapping}}` ADD CONSTRAINT `{{prefix}}groups_folders_mapping_folder_id_fk_folders_id` " +
-		"FOREIGN KEY (`folder_id`) REFERENCES `{{folders}}` (`id`) ON DELETE CASCADE;" +
-		"ALTER TABLE `{{groups_folders_mapping}}` ADD CONSTRAINT `{{prefix}}groups_folders_mapping_group_id_fk_groups_id` " +
-		"FOREIGN KEY (`group_id`) REFERENCES `{{groups}}` (`id`) ON DELETE CASCADE;" +
-		"CREATE INDEX `{{prefix}}groups_updated_at_idx` ON `{{groups}}` (`updated_at`);"
-	mysqlV17DownSQL = "ALTER TABLE `{{groups_folders_mapping}}` DROP FOREIGN KEY `{{prefix}}groups_folders_mapping_group_id_fk_groups_id`;" +
-		"ALTER TABLE `{{groups_folders_mapping}}` DROP FOREIGN KEY `{{prefix}}groups_folders_mapping_folder_id_fk_folders_id`;" +
-		"ALTER TABLE `{{users_groups_mapping}}` DROP FOREIGN KEY `{{prefix}}users_groups_mapping_user_id_fk_users_id`;" +
-		"ALTER TABLE `{{users_groups_mapping}}` DROP FOREIGN KEY `{{prefix}}users_groups_mapping_group_id_fk_groups_id`;" +
-		"ALTER TABLE `{{groups_folders_mapping}}` DROP INDEX `{{prefix}}unique_group_folder_mapping`;" +
-		"ALTER TABLE `{{users_groups_mapping}}` DROP INDEX `{{prefix}}unique_user_group_mapping`;" +
-		"DROP TABLE `{{users_groups_mapping}}` CASCADE;" +
-		"DROP TABLE `{{groups_folders_mapping}}` CASCADE;" +
-		"DROP TABLE `{{groups}}` CASCADE;" +
-		"ALTER TABLE `{{users_folders_mapping}}` DROP FOREIGN KEY `{{prefix}}users_folders_mapping_folder_id_fk_folders_id`;" +
-		"ALTER TABLE `{{users_folders_mapping}}` DROP FOREIGN KEY `{{prefix}}users_folders_mapping_user_id_fk_users_id`;" +
-		"ALTER TABLE `{{users_folders_mapping}}` DROP INDEX `{{prefix}}unique_user_folder_mapping`;" +
-		"RENAME TABLE `{{users_folders_mapping}}` TO `{{folders_mapping}}`;" +
-		"ALTER TABLE `{{folders_mapping}}` ADD CONSTRAINT `{{prefix}}unique_mapping` UNIQUE (`user_id`, `folder_id`);" +
-		"ALTER TABLE `{{folders_mapping}}` ADD CONSTRAINT `{{prefix}}folders_mapping_user_id_fk_users_id` " +
-		"FOREIGN KEY (`user_id`) REFERENCES `{{users}}` (`id`) ON DELETE CASCADE;" +
-		"ALTER TABLE `{{folders_mapping}}` ADD CONSTRAINT `{{prefix}}folders_mapping_folder_id_fk_folders_id` " +
-		"FOREIGN KEY (`folder_id`) REFERENCES `{{folders}}` (`id`) ON DELETE CASCADE;"
-	mysqlV19SQL = "CREATE TABLE `{{shared_sessions}}` (`key` varchar(128) NOT NULL PRIMARY KEY, " +
-		"`data` longtext NOT NULL, `type` integer NOT NULL, `timestamp` bigint NOT NULL);" +
+		"CREATE INDEX `{{prefix}}active_transfers_updated_at_idx` ON `{{active_transfers}}` (`updated_at`);" +
+		"CREATE INDEX `{{prefix}}groups_updated_at_idx` ON `{{groups}}` (`updated_at`);" +
 		"CREATE INDEX `{{prefix}}shared_sessions_type_idx` ON `{{shared_sessions}}` (`type`);" +
-		"CREATE INDEX `{{prefix}}shared_sessions_timestamp_idx` ON `{{shared_sessions}}` (`timestamp`);"
-	mysqlV19DownSQL = "DROP TABLE `{{shared_sessions}}` CASCADE;"
+		"CREATE INDEX `{{prefix}}shared_sessions_timestamp_idx` ON `{{shared_sessions}}` (`timestamp`);" +
+		"INSERT INTO {{schema_version}} (version) VALUES (19);"
 )
 
 // MySQLProvider defines the auth provider for MySQL/MariaDB database
@@ -559,20 +520,11 @@ func (p *MySQLProvider) initializeDatabase() error {
 	if errors.Is(err, sql.ErrNoRows) {
 		return errSchemaVersionEmpty
 	}
-	logger.InfoToConsole("creating initial database schema, version 15")
-	providerLog(logger.LevelInfo, "creating initial database schema, version 15")
-	initialSQL := strings.ReplaceAll(mysqlInitialSQL, "{{schema_version}}", sqlTableSchemaVersion)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{admins}}", sqlTableAdmins)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{folders}}", sqlTableFolders)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{users}}", sqlTableUsers)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{folders_mapping}}", sqlTableFoldersMapping)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{api_keys}}", sqlTableAPIKeys)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{shares}}", sqlTableShares)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{defender_events}}", sqlTableDefenderEvents)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{defender_hosts}}", sqlTableDefenderHosts)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{prefix}}", config.SQLTablesPrefix)
+	logger.InfoToConsole("creating initial database schema, version 19")
+	providerLog(logger.LevelInfo, "creating initial database schema, version 19")
+	initialSQL := sqlReplaceAll(mysqlInitialSQL)
 
-	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, strings.Split(initialSQL, ";"), 15, true)
+	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, strings.Split(initialSQL, ";"), 19, true)
 }
 
 func (p *MySQLProvider) migrateDatabase() error { //nolint:dupl
@@ -585,19 +537,11 @@ func (p *MySQLProvider) migrateDatabase() error { //nolint:dupl
 	case version == sqlDatabaseVersion:
 		providerLog(logger.LevelDebug, "sql database is up to date, current version: %v", version)
 		return ErrNoInitRequired
-	case version < 15:
+	case version < 19:
 		err = fmt.Errorf("database version %v is too old, please see the upgrading docs", version)
 		providerLog(logger.LevelError, "%v", err)
 		logger.ErrorToConsole("%v", err)
 		return err
-	case version == 15:
-		return updateMySQLDatabaseFromV15(p.dbHandle)
-	case version == 16:
-		return updateMySQLDatabaseFromV16(p.dbHandle)
-	case version == 17:
-		return updateMySQLDatabaseFromV17(p.dbHandle)
-	case version == 18:
-		return updateMySQLDatabaseFromV18(p.dbHandle)
 	default:
 		if version > sqlDatabaseVersion {
 			providerLog(logger.LevelError, "database version %v is newer than the supported one: %v", version,
@@ -620,14 +564,6 @@ func (p *MySQLProvider) revertDatabase(targetVersion int) error {
 	}
 
 	switch dbVersion.Version {
-	case 16:
-		return downgradeMySQLDatabaseFromV16(p.dbHandle)
-	case 17:
-		return downgradeMySQLDatabaseFromV17(p.dbHandle)
-	case 18:
-		return downgradeMySQLDatabaseFromV18(p.dbHandle)
-	case 19:
-		return downgradeMySQLDatabaseFromV19(p.dbHandle)
 	default:
 		return fmt.Errorf("database version not handled: %v", dbVersion.Version)
 	}
@@ -637,128 +573,3 @@ func (p *MySQLProvider) resetDatabase() error {
 	sql := sqlReplaceAll(mysqlResetSQL)
 	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, strings.Split(sql, ";"), 0, false)
 }
-
-func updateMySQLDatabaseFromV15(dbHandle *sql.DB) error {
-	if err := updateMySQLDatabaseFrom15To16(dbHandle); err != nil {
-		return err
-	}
-	return updateMySQLDatabaseFromV16(dbHandle)
-}
-
-func updateMySQLDatabaseFromV16(dbHandle *sql.DB) error {
-	if err := updateMySQLDatabaseFrom16To17(dbHandle); err != nil {
-		return err
-	}
-	return updateMySQLDatabaseFromV17(dbHandle)
-}
-
-func updateMySQLDatabaseFromV17(dbHandle *sql.DB) error {
-	if err := updateMySQLDatabaseFrom17To18(dbHandle); err != nil {
-		return err
-	}
-	return updateMySQLDatabaseFromV18(dbHandle)
-}
-
-func updateMySQLDatabaseFromV18(dbHandle *sql.DB) error {
-	return updateMySQLDatabaseFrom18To19(dbHandle)
-}
-
-func downgradeMySQLDatabaseFromV16(dbHandle *sql.DB) error {
-	return downgradeMySQLDatabaseFrom16To15(dbHandle)
-}
-
-func downgradeMySQLDatabaseFromV17(dbHandle *sql.DB) error {
-	if err := downgradeMySQLDatabaseFrom17To16(dbHandle); err != nil {
-		return err
-	}
-	return downgradeMySQLDatabaseFromV16(dbHandle)
-}
-
-func downgradeMySQLDatabaseFromV18(dbHandle *sql.DB) error {
-	if err := downgradeMySQLDatabaseFrom18To17(dbHandle); err != nil {
-		return err
-	}
-	return downgradeMySQLDatabaseFromV17(dbHandle)
-}
-
-func downgradeMySQLDatabaseFromV19(dbHandle *sql.DB) error {
-	if err := downgradeMySQLDatabaseFrom19To18(dbHandle); err != nil {
-		return err
-	}
-	return downgradeMySQLDatabaseFromV18(dbHandle)
-}
-
-func updateMySQLDatabaseFrom15To16(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 15 -> 16")
-	providerLog(logger.LevelInfo, "updating database version: 15 -> 16")
-	sql := strings.ReplaceAll(mysqlV16SQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{active_transfers}}", sqlTableActiveTransfers)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, strings.Split(sql, ";"), 16, true)
-}
-
-func updateMySQLDatabaseFrom16To17(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 16 -> 17")
-	providerLog(logger.LevelInfo, "updating database version: 16 -> 17")
-	sql := strings.ReplaceAll(mysqlV17SQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{groups}}", sqlTableGroups)
-	sql = strings.ReplaceAll(sql, "{{folders}}", sqlTableFolders)
-	sql = strings.ReplaceAll(sql, "{{folders_mapping}}", sqlTableFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_folders_mapping}}", sqlTableUsersFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_groups_mapping}}", sqlTableUsersGroupsMapping)
-	sql = strings.ReplaceAll(sql, "{{groups_folders_mapping}}", sqlTableGroupsFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, strings.Split(sql, ";"), 17, true)
-}
-
-func updateMySQLDatabaseFrom17To18(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 17 -> 18")
-	providerLog(logger.LevelInfo, "updating database version: 17 -> 18")
-	if err := importGCSCredentials(); err != nil {
-		return err
-	}
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, nil, 18, true)
-}
-
-func updateMySQLDatabaseFrom18To19(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 18 -> 19")
-	providerLog(logger.LevelInfo, "updating database version: 18 -> 19")
-	sql := strings.ReplaceAll(mysqlV19SQL, "{{shared_sessions}}", sqlTableSharedSessions)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, strings.Split(sql, ";"), 19, true)
-}
-
-func downgradeMySQLDatabaseFrom16To15(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 16 -> 15")
-	providerLog(logger.LevelInfo, "downgrading database version: 16 -> 15")
-	sql := strings.ReplaceAll(mysqlV16DownSQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{active_transfers}}", sqlTableActiveTransfers)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, strings.Split(sql, ";"), 15, false)
-}
-
-func downgradeMySQLDatabaseFrom17To16(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 17 -> 16")
-	providerLog(logger.LevelInfo, "downgrading database version: 17 -> 16")
-	sql := strings.ReplaceAll(mysqlV17DownSQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{groups}}", sqlTableGroups)
-	sql = strings.ReplaceAll(sql, "{{folders}}", sqlTableFolders)
-	sql = strings.ReplaceAll(sql, "{{folders_mapping}}", sqlTableFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_folders_mapping}}", sqlTableUsersFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_groups_mapping}}", sqlTableUsersGroupsMapping)
-	sql = strings.ReplaceAll(sql, "{{groups_folders_mapping}}", sqlTableGroupsFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, strings.Split(sql, ";"), 16, false)
-}
-
-func downgradeMySQLDatabaseFrom18To17(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 18 -> 17")
-	providerLog(logger.LevelInfo, "downgrading database version: 18 -> 17")
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, nil, 17, false)
-}
-
-func downgradeMySQLDatabaseFrom19To18(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 19 -> 18")
-	providerLog(logger.LevelInfo, "downgrading database version: 19 -> 18")
-	sql := strings.ReplaceAll(mysqlV19DownSQL, "{{shared_sessions}}", sqlTableSharedSessions)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 18, false)
-}
diff --git a/dataprovider/pgsql.go b/dataprovider/pgsql.go
index 997933c6..fbbce0ec 100644
--- a/dataprovider/pgsql.go
+++ b/dataprovider/pgsql.go
@@ -42,6 +42,11 @@ CREATE TABLE "{{admins}}" ("id" serial NOT NULL PRIMARY KEY, "username" varchar(
 "description" varchar(512) NULL, "password" varchar(255) NOT NULL, "email" varchar(255) NULL, "status" integer NOT NULL,
 "permissions" text NOT NULL, "filters" text NULL, "additional_info" text NULL, "last_login" bigint NOT NULL,
 "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL);
+CREATE TABLE "{{active_transfers}}" ("id" bigserial NOT NULL PRIMARY KEY, "connection_id" varchar(100) NOT NULL,
+"transfer_id" bigint NOT NULL, "transfer_type" integer NOT NULL, "username" varchar(255) NOT NULL,
+"folder_name" varchar(255) NULL, "ip" varchar(50) NOT NULL, "truncated_size" bigint NOT NULL,
+"current_ul_size" bigint NOT NULL, "current_dl_size" bigint NOT NULL, "created_at" bigint NOT NULL,
+"updated_at" bigint NOT NULL);
 CREATE TABLE "{{defender_hosts}}" ("id" bigserial NOT NULL PRIMARY KEY, "ip" varchar(50) NOT NULL UNIQUE,
 "ban_time" bigint NOT NULL, "updated_at" bigint NOT NULL);
 CREATE TABLE "{{defender_events}}" ("id" bigserial NOT NULL PRIMARY KEY, "date_time" bigint NOT NULL, "score" integer NOT NULL,
@@ -51,19 +56,29 @@ ALTER TABLE "{{defender_events}}" ADD CONSTRAINT "{{prefix}}defender_events_host
 CREATE TABLE "{{folders}}" ("id" serial NOT NULL PRIMARY KEY, "name" varchar(255) NOT NULL UNIQUE, "description" varchar(512) NULL,
 "path" text NULL, "used_quota_size" bigint NOT NULL, "used_quota_files" integer NOT NULL, "last_quota_update" bigint NOT NULL,
 "filesystem" text NULL);
+CREATE TABLE "{{groups}}" ("id" serial NOT NULL PRIMARY KEY, "name" varchar(255) NOT NULL UNIQUE,
+"description" varchar(512) NULL, "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL, "user_settings" text NULL);
+CREATE TABLE "{{shared_sessions}}" ("key" varchar(128) NOT NULL PRIMARY KEY,
+"data" text NOT NULL, "type" integer NOT NULL, "timestamp" bigint NOT NULL);
 CREATE TABLE "{{users}}" ("id" serial NOT NULL PRIMARY KEY, "username" varchar(255) NOT NULL UNIQUE, "status" integer NOT NULL,
 "expiration_date" bigint NOT NULL, "description" varchar(512) NULL, "password" text NULL, "public_keys" text NULL,
 "home_dir" text NOT NULL, "uid" bigint NOT NULL, "gid" bigint NOT NULL, "max_sessions" integer NOT NULL,
 "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL, "permissions" text NOT NULL, "used_quota_size" bigint NOT NULL,
 "used_quota_files" integer NOT NULL, "last_quota_update" bigint NOT NULL, "upload_bandwidth" integer NOT NULL,
 "download_bandwidth" integer NOT NULL, "last_login" bigint NOT NULL, "filters" text NULL, "filesystem" text NULL,
-"additional_info" text NULL, "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL, "email" varchar(255) NULL);
-CREATE TABLE "{{folders_mapping}}" ("id" serial NOT NULL PRIMARY KEY, "virtual_path" text NOT NULL,
+"additional_info" text NULL, "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL, "email" varchar(255) NULL,
+"upload_data_transfer" integer NOT NULL, "download_data_transfer" integer NOT NULL, "total_data_transfer" integer NOT NULL,
+"used_upload_data_transfer" integer NOT NULL, "used_download_data_transfer" integer NOT NULL);
+CREATE TABLE "{{groups_folders_mapping}}" ("id" serial NOT NULL PRIMARY KEY, "group_id" integer NOT NULL,
+"folder_id" integer NOT NULL, "virtual_path" text NOT NULL, "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL);
+CREATE TABLE "{{users_groups_mapping}}" ("id" serial NOT NULL PRIMARY KEY, "user_id" integer NOT NULL,
+"group_id" integer NOT NULL, "group_type" integer NOT NULL);
+CREATE TABLE "{{users_folders_mapping}}" ("id" serial NOT NULL PRIMARY KEY, "virtual_path" text NOT NULL,
 "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL, "folder_id" integer NOT NULL, "user_id" integer NOT NULL);
-ALTER TABLE "{{folders_mapping}}" ADD CONSTRAINT "{{prefix}}unique_mapping" UNIQUE ("user_id", "folder_id");
-ALTER TABLE "{{folders_mapping}}" ADD CONSTRAINT "{{prefix}}folders_mapping_folder_id_fk_folders_id"
+ALTER TABLE "{{users_folders_mapping}}" ADD CONSTRAINT "{{prefix}}unique_user_folder_mapping" UNIQUE ("user_id", "folder_id");
+ALTER TABLE "{{users_folders_mapping}}" ADD CONSTRAINT "{{prefix}}users_folders_mapping_folder_id_fk_folders_id"
 FOREIGN KEY ("folder_id") REFERENCES "{{folders}}" ("id") MATCH SIMPLE ON UPDATE NO ACTION ON DELETE CASCADE;
-ALTER TABLE "{{folders_mapping}}" ADD CONSTRAINT "{{prefix}}folders_mapping_user_id_fk_users_id"
+ALTER TABLE "{{users_folders_mapping}}" ADD CONSTRAINT "{{prefix}}users_folders_mapping_user_id_fk_users_id"
 FOREIGN KEY ("user_id") REFERENCES "{{users}}" ("id") MATCH SIMPLE ON UPDATE NO ACTION ON DELETE CASCADE;
 CREATE TABLE "{{shares}}" ("id" serial NOT NULL PRIMARY KEY,
 "share_id" varchar(60) NOT NULL UNIQUE, "name" varchar(255) NOT NULL, "description" varchar(512) NULL,
@@ -81,57 +96,6 @@ ALTER TABLE "{{api_keys}}" ADD CONSTRAINT "{{prefix}}api_keys_admin_id_fk_admins
 REFERENCES "{{admins}}" ("id") MATCH SIMPLE ON UPDATE NO ACTION ON DELETE CASCADE;
 ALTER TABLE "{{api_keys}}" ADD CONSTRAINT "{{prefix}}api_keys_user_id_fk_users_id" FOREIGN KEY ("user_id")
 REFERENCES "{{users}}" ("id") MATCH SIMPLE ON UPDATE NO ACTION ON DELETE CASCADE;
-CREATE INDEX "{{prefix}}folders_mapping_folder_id_idx" ON "{{folders_mapping}}" ("folder_id");
-CREATE INDEX "{{prefix}}folders_mapping_user_id_idx" ON "{{folders_mapping}}" ("user_id");
-CREATE INDEX "{{prefix}}api_keys_admin_id_idx" ON "{{api_keys}}" ("admin_id");
-CREATE INDEX "{{prefix}}api_keys_user_id_idx" ON "{{api_keys}}" ("user_id");
-CREATE INDEX "{{prefix}}users_updated_at_idx" ON "{{users}}" ("updated_at");
-CREATE INDEX "{{prefix}}shares_user_id_idx" ON "{{shares}}" ("user_id");
-CREATE INDEX "{{prefix}}defender_hosts_updated_at_idx" ON "{{defender_hosts}}" ("updated_at");
-CREATE INDEX "{{prefix}}defender_hosts_ban_time_idx" ON "{{defender_hosts}}" ("ban_time");
-CREATE INDEX "{{prefix}}defender_events_date_time_idx" ON "{{defender_events}}" ("date_time");
-CREATE INDEX "{{prefix}}defender_events_host_id_idx" ON "{{defender_events}}" ("host_id");
-INSERT INTO {{schema_version}} (version) VALUES (15);
-`
-	pgsqlV16SQL = `ALTER TABLE "{{users}}" ADD COLUMN "download_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ALTER COLUMN "download_data_transfer" DROP DEFAULT;
-ALTER TABLE "{{users}}" ADD COLUMN "total_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ALTER COLUMN "total_data_transfer" DROP DEFAULT;
-ALTER TABLE "{{users}}" ADD COLUMN "upload_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ALTER COLUMN "upload_data_transfer" DROP DEFAULT;
-ALTER TABLE "{{users}}" ADD COLUMN "used_download_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ALTER COLUMN "used_download_data_transfer" DROP DEFAULT;
-ALTER TABLE "{{users}}" ADD COLUMN "used_upload_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ALTER COLUMN "used_upload_data_transfer" DROP DEFAULT;
-CREATE TABLE "{{active_transfers}}" ("id" bigserial NOT NULL PRIMARY KEY, "connection_id" varchar(100) NOT NULL,
-"transfer_id" bigint NOT NULL, "transfer_type" integer NOT NULL, "username" varchar(255) NOT NULL,
-"folder_name" varchar(255) NULL, "ip" varchar(50) NOT NULL, "truncated_size" bigint NOT NULL,
-"current_ul_size" bigint NOT NULL, "current_dl_size" bigint NOT NULL, "created_at" bigint NOT NULL,
-"updated_at" bigint NOT NULL);
-CREATE INDEX "{{prefix}}active_transfers_connection_id_idx" ON "{{active_transfers}}" ("connection_id");
-CREATE INDEX "{{prefix}}active_transfers_transfer_id_idx" ON "{{active_transfers}}" ("transfer_id");
-CREATE INDEX "{{prefix}}active_transfers_updated_at_idx" ON "{{active_transfers}}" ("updated_at");
-`
-	pgsqlV16DownSQL = `ALTER TABLE "{{users}}" DROP COLUMN "used_upload_data_transfer" CASCADE;
-ALTER TABLE "{{users}}" DROP COLUMN "used_download_data_transfer" CASCADE;
-ALTER TABLE "{{users}}" DROP COLUMN "upload_data_transfer" CASCADE;
-ALTER TABLE "{{users}}" DROP COLUMN "total_data_transfer" CASCADE;
-ALTER TABLE "{{users}}" DROP COLUMN "download_data_transfer" CASCADE;
-DROP TABLE "{{active_transfers}}" CASCADE;
-`
-	pgsqlV17SQL = `CREATE TABLE "{{groups}}" ("id" serial NOT NULL PRIMARY KEY, "name" varchar(255) NOT NULL UNIQUE,
-"description" varchar(512) NULL, "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL, "user_settings" text NULL);
-CREATE TABLE "{{groups_folders_mapping}}" ("id" serial NOT NULL PRIMARY KEY, "group_id" integer NOT NULL,
-"folder_id" integer NOT NULL, "virtual_path" text NOT NULL, "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL);
-CREATE TABLE "{{users_groups_mapping}}" ("id" serial NOT NULL PRIMARY KEY, "user_id" integer NOT NULL,
-"group_id" integer NOT NULL, "group_type" integer NOT NULL);
-DROP INDEX "{{prefix}}folders_mapping_folder_id_idx";
-DROP INDEX "{{prefix}}folders_mapping_user_id_idx";
-ALTER TABLE "{{folders_mapping}}" DROP CONSTRAINT "{{prefix}}unique_mapping";
-ALTER TABLE "{{folders_mapping}}" RENAME TO "{{users_folders_mapping}}";
-ALTER TABLE "{{users_folders_mapping}}" ADD CONSTRAINT "{{prefix}}unique_user_folder_mapping" UNIQUE ("user_id", "folder_id");
-CREATE INDEX "{{prefix}}users_folders_mapping_folder_id_idx" ON "{{users_folders_mapping}}" ("folder_id");
-CREATE INDEX "{{prefix}}users_folders_mapping_user_id_idx" ON "{{users_folders_mapping}}" ("user_id");
 ALTER TABLE "{{users_groups_mapping}}" ADD CONSTRAINT "{{prefix}}unique_user_group_mapping" UNIQUE ("user_id", "group_id");
 ALTER TABLE "{{groups_folders_mapping}}" ADD CONSTRAINT "{{prefix}}unique_group_folder_mapping" UNIQUE ("group_id", "folder_id");
 CREATE INDEX "{{prefix}}users_groups_mapping_group_id_idx" ON "{{users_groups_mapping}}" ("group_id");
@@ -147,23 +111,23 @@ CREATE INDEX "{{prefix}}groups_folders_mapping_group_id_idx" ON "{{groups_folder
 ALTER TABLE "{{groups_folders_mapping}}" ADD CONSTRAINT "{{prefix}}groups_folders_mapping_group_id_fk_groups_id"
 FOREIGN KEY ("group_id") REFERENCES "groups" ("id") MATCH SIMPLE ON UPDATE NO ACTION ON DELETE CASCADE;
 CREATE INDEX "{{prefix}}groups_updated_at_idx" ON "{{groups}}" ("updated_at");
-`
-	pgsqlV17DownSQL = `DROP TABLE "{{users_groups_mapping}}" CASCADE;
-DROP TABLE "{{groups_folders_mapping}}" CASCADE;
-DROP TABLE "{{groups}}" CASCADE;
-DROP INDEX "{{prefix}}users_folders_mapping_folder_id_idx";
-DROP INDEX "{{prefix}}users_folders_mapping_user_id_idx";
-ALTER TABLE "{{users_folders_mapping}}" DROP CONSTRAINT "{{prefix}}unique_user_folder_mapping";
-ALTER TABLE "{{users_folders_mapping}}" RENAME TO "{{folders_mapping}}";
-ALTER TABLE "{{folders_mapping}}" ADD CONSTRAINT "{{prefix}}unique_mapping" UNIQUE ("user_id", "folder_id");
-CREATE INDEX "{{prefix}}folders_mapping_folder_id_idx" ON "{{folders_mapping}}" ("folder_id");
-CREATE INDEX "{{prefix}}folders_mapping_user_id_idx" ON "{{folders_mapping}}" ("user_id");
-`
-	pgsqlV19SQL = `CREATE TABLE "{{shared_sessions}}" ("key" varchar(128) NOT NULL PRIMARY KEY,
-"data" text NOT NULL, "type" integer NOT NULL, "timestamp" bigint NOT NULL);
+CREATE INDEX "{{prefix}}users_folders_mapping_folder_id_idx" ON "{{users_folders_mapping}}" ("folder_id");
+CREATE INDEX "{{prefix}}users_folders_mapping_user_id_idx" ON "{{users_folders_mapping}}" ("user_id");
+CREATE INDEX "{{prefix}}api_keys_admin_id_idx" ON "{{api_keys}}" ("admin_id");
+CREATE INDEX "{{prefix}}api_keys_user_id_idx" ON "{{api_keys}}" ("user_id");
+CREATE INDEX "{{prefix}}users_updated_at_idx" ON "{{users}}" ("updated_at");
+CREATE INDEX "{{prefix}}shares_user_id_idx" ON "{{shares}}" ("user_id");
+CREATE INDEX "{{prefix}}defender_hosts_updated_at_idx" ON "{{defender_hosts}}" ("updated_at");
+CREATE INDEX "{{prefix}}defender_hosts_ban_time_idx" ON "{{defender_hosts}}" ("ban_time");
+CREATE INDEX "{{prefix}}defender_events_date_time_idx" ON "{{defender_events}}" ("date_time");
+CREATE INDEX "{{prefix}}defender_events_host_id_idx" ON "{{defender_events}}" ("host_id");
+CREATE INDEX "{{prefix}}active_transfers_connection_id_idx" ON "{{active_transfers}}" ("connection_id");
+CREATE INDEX "{{prefix}}active_transfers_transfer_id_idx" ON "{{active_transfers}}" ("transfer_id");
+CREATE INDEX "{{prefix}}active_transfers_updated_at_idx" ON "{{active_transfers}}" ("updated_at");
 CREATE INDEX "{{prefix}}shared_sessions_type_idx" ON "{{shared_sessions}}" ("type");
-CREATE INDEX "{{prefix}}shared_sessions_timestamp_idx" ON "{{shared_sessions}}" ("timestamp");`
-	pgsqlV19DownSQL = `DROP TABLE "{{shared_sessions}}" CASCADE;`
+CREATE INDEX "{{prefix}}shared_sessions_timestamp_idx" ON "{{shared_sessions}}" ("timestamp");
+INSERT INTO {{schema_version}} (version) VALUES (19);
+`
 )
 
 // PGSQLProvider defines the auth provider for PostgreSQL database
@@ -528,18 +492,9 @@ func (p *PGSQLProvider) initializeDatabase() error {
 	if errors.Is(err, sql.ErrNoRows) {
 		return errSchemaVersionEmpty
 	}
-	logger.InfoToConsole("creating initial database schema, version 15")
-	providerLog(logger.LevelInfo, "creating initial database schema, version 15")
-	initialSQL := strings.ReplaceAll(pgsqlInitial, "{{schema_version}}", sqlTableSchemaVersion)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{admins}}", sqlTableAdmins)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{folders}}", sqlTableFolders)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{users}}", sqlTableUsers)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{folders_mapping}}", sqlTableFoldersMapping)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{api_keys}}", sqlTableAPIKeys)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{shares}}", sqlTableShares)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{defender_events}}", sqlTableDefenderEvents)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{defender_hosts}}", sqlTableDefenderHosts)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{prefix}}", config.SQLTablesPrefix)
+	logger.InfoToConsole("creating initial database schema, version 19")
+	providerLog(logger.LevelInfo, "creating initial database schema, version 19")
+	initialSQL := sqlReplaceAll(pgsqlInitial)
 	if config.Driver == CockroachDataProviderName {
 		// Cockroach does not support deferrable constraint validation, we don't need them,
 		// we keep these definitions for the PostgreSQL driver to avoid changes for users
@@ -547,7 +502,7 @@ func (p *PGSQLProvider) initializeDatabase() error {
 		initialSQL = strings.ReplaceAll(initialSQL, "DEFERRABLE INITIALLY DEFERRED", "")
 	}
 
-	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, []string{initialSQL}, 15, true)
+	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, []string{initialSQL}, 19, true)
 }
 
 func (p *PGSQLProvider) migrateDatabase() error { //nolint:dupl
@@ -560,19 +515,11 @@ func (p *PGSQLProvider) migrateDatabase() error { //nolint:dupl
 	case version == sqlDatabaseVersion:
 		providerLog(logger.LevelDebug, "sql database is up to date, current version: %v", version)
 		return ErrNoInitRequired
-	case version < 15:
+	case version < 19:
 		err = fmt.Errorf("database version %v is too old, please see the upgrading docs", version)
 		providerLog(logger.LevelError, "%v", err)
 		logger.ErrorToConsole("%v", err)
 		return err
-	case version == 15:
-		return updatePGSQLDatabaseFromV15(p.dbHandle)
-	case version == 16:
-		return updatePGSQLDatabaseFromV16(p.dbHandle)
-	case version == 17:
-		return updatePGSQLDatabaseFromV17(p.dbHandle)
-	case version == 18:
-		return updatePGSQLDatabaseFromV18(p.dbHandle)
 	default:
 		if version > sqlDatabaseVersion {
 			providerLog(logger.LevelError, "database version %v is newer than the supported one: %v", version,
@@ -595,14 +542,6 @@ func (p *PGSQLProvider) revertDatabase(targetVersion int) error {
 	}
 
 	switch dbVersion.Version {
-	case 16:
-		return downgradePGSQLDatabaseFromV16(p.dbHandle)
-	case 17:
-		return downgradePGSQLDatabaseFromV17(p.dbHandle)
-	case 18:
-		return downgradePGSQLDatabaseFromV18(p.dbHandle)
-	case 19:
-		return downgradePGSQLDatabaseFromV19(p.dbHandle)
 	default:
 		return fmt.Errorf("database version not handled: %v", dbVersion.Version)
 	}
@@ -612,154 +551,3 @@ func (p *PGSQLProvider) resetDatabase() error {
 	sql := sqlReplaceAll(pgsqlResetSQL)
 	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, []string{sql}, 0, false)
 }
-
-func updatePGSQLDatabaseFromV15(dbHandle *sql.DB) error {
-	if err := updatePGSQLDatabaseFrom15To16(dbHandle); err != nil {
-		return err
-	}
-	return updatePGSQLDatabaseFromV16(dbHandle)
-}
-
-func updatePGSQLDatabaseFromV16(dbHandle *sql.DB) error {
-	if err := updatePGSQLDatabaseFrom16To17(dbHandle); err != nil {
-		return err
-	}
-	return updatePGSQLDatabaseFromV17(dbHandle)
-}
-
-func updatePGSQLDatabaseFromV17(dbHandle *sql.DB) error {
-	if err := updatePGSQLDatabaseFrom17To18(dbHandle); err != nil {
-		return err
-	}
-	return updatePGSQLDatabaseFromV18(dbHandle)
-}
-
-func updatePGSQLDatabaseFromV18(dbHandle *sql.DB) error {
-	return updatePGSQLDatabaseFrom18To19(dbHandle)
-}
-
-func downgradePGSQLDatabaseFromV16(dbHandle *sql.DB) error {
-	return downgradePGSQLDatabaseFrom16To15(dbHandle)
-}
-
-func downgradePGSQLDatabaseFromV17(dbHandle *sql.DB) error {
-	if err := downgradePGSQLDatabaseFrom17To16(dbHandle); err != nil {
-		return err
-	}
-	return downgradePGSQLDatabaseFromV16(dbHandle)
-}
-
-func downgradePGSQLDatabaseFromV18(dbHandle *sql.DB) error {
-	if err := downgradePGSQLDatabaseFrom18To17(dbHandle); err != nil {
-		return err
-	}
-	return downgradePGSQLDatabaseFromV17(dbHandle)
-}
-
-func downgradePGSQLDatabaseFromV19(dbHandle *sql.DB) error {
-	if err := downgradePGSQLDatabaseFrom19To18(dbHandle); err != nil {
-		return err
-	}
-	return downgradePGSQLDatabaseFromV18(dbHandle)
-}
-
-func updatePGSQLDatabaseFrom15To16(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 15 -> 16")
-	providerLog(logger.LevelInfo, "updating database version: 15 -> 16")
-	sql := strings.ReplaceAll(pgsqlV16SQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{active_transfers}}", sqlTableActiveTransfers)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	if config.Driver == CockroachDataProviderName {
-		// Cockroach does not allow to run this schema migration within a transaction
-		ctx, cancel := context.WithTimeout(context.Background(), longSQLQueryTimeout)
-		defer cancel()
-
-		for _, q := range strings.Split(sql, ";") {
-			if strings.TrimSpace(q) == "" {
-				continue
-			}
-			_, err := dbHandle.ExecContext(ctx, q)
-			if err != nil {
-				return err
-			}
-		}
-		return sqlCommonUpdateDatabaseVersion(ctx, dbHandle, 16)
-	}
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 16, true)
-}
-
-func updatePGSQLDatabaseFrom16To17(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 16 -> 17")
-	providerLog(logger.LevelInfo, "updating database version: 16 -> 17")
-	sql := pgsqlV17SQL
-	if config.Driver == CockroachDataProviderName {
-		sql = strings.ReplaceAll(sql, `ALTER TABLE "{{folders_mapping}}" DROP CONSTRAINT "{{prefix}}unique_mapping";`,
-			`DROP INDEX "{{prefix}}unique_mapping" CASCADE;`)
-	}
-	sql = strings.ReplaceAll(sql, "{{groups}}", sqlTableGroups)
-	sql = strings.ReplaceAll(sql, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{folders}}", sqlTableFolders)
-	sql = strings.ReplaceAll(sql, "{{folders_mapping}}", sqlTableFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_folders_mapping}}", sqlTableUsersFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_groups_mapping}}", sqlTableUsersGroupsMapping)
-	sql = strings.ReplaceAll(sql, "{{groups_folders_mapping}}", sqlTableGroupsFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 17, true)
-}
-
-func updatePGSQLDatabaseFrom17To18(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 17 -> 18")
-	providerLog(logger.LevelInfo, "updating database version: 17 -> 18")
-	if err := importGCSCredentials(); err != nil {
-		return err
-	}
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, nil, 18, true)
-}
-
-func updatePGSQLDatabaseFrom18To19(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 18 -> 19")
-	providerLog(logger.LevelInfo, "updating database version: 18 -> 19")
-	sql := strings.ReplaceAll(pgsqlV19SQL, "{{shared_sessions}}", sqlTableSharedSessions)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 19, true)
-}
-
-func downgradePGSQLDatabaseFrom16To15(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 16 -> 15")
-	providerLog(logger.LevelInfo, "downgrading database version: 16 -> 15")
-	sql := strings.ReplaceAll(pgsqlV16DownSQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{active_transfers}}", sqlTableActiveTransfers)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 15, false)
-}
-
-func downgradePGSQLDatabaseFrom17To16(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 17 -> 16")
-	providerLog(logger.LevelInfo, "downgrading database version: 17 -> 16")
-	sql := pgsqlV17DownSQL
-	if config.Driver == CockroachDataProviderName {
-		sql = strings.ReplaceAll(sql, `ALTER TABLE "{{users_folders_mapping}}" DROP CONSTRAINT "{{prefix}}unique_user_folder_mapping";`,
-			`DROP INDEX "{{prefix}}unique_user_folder_mapping" CASCADE;`)
-	}
-	sql = strings.ReplaceAll(sql, "{{groups}}", sqlTableGroups)
-	sql = strings.ReplaceAll(sql, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{folders}}", sqlTableFolders)
-	sql = strings.ReplaceAll(sql, "{{folders_mapping}}", sqlTableFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_folders_mapping}}", sqlTableUsersFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_groups_mapping}}", sqlTableUsersGroupsMapping)
-	sql = strings.ReplaceAll(sql, "{{groups_folders_mapping}}", sqlTableGroupsFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 16, false)
-}
-
-func downgradePGSQLDatabaseFrom18To17(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 18 -> 17")
-	providerLog(logger.LevelInfo, "downgrading database version: 18 -> 17")
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, nil, 17, false)
-}
-
-func downgradePGSQLDatabaseFrom19To18(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 19 -> 18")
-	providerLog(logger.LevelInfo, "downgrading database version: 19 -> 18")
-	sql := strings.ReplaceAll(pgsqlV19DownSQL, "{{shared_sessions}}", sqlTableSharedSessions)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 18, false)
-}
diff --git a/dataprovider/sqlcommon.go b/dataprovider/sqlcommon.go
index baa29b51..ac089fde 100644
--- a/dataprovider/sqlcommon.go
+++ b/dataprovider/sqlcommon.go
@@ -57,6 +57,7 @@ func sqlReplaceAll(sql string) string {
 	sql = strings.ReplaceAll(sql, "{{defender_events}}", sqlTableDefenderEvents)
 	sql = strings.ReplaceAll(sql, "{{defender_hosts}}", sqlTableDefenderHosts)
 	sql = strings.ReplaceAll(sql, "{{active_transfers}}", sqlTableActiveTransfers)
+	sql = strings.ReplaceAll(sql, "{{shared_sessions}}", sqlTableSharedSessions)
 	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
 	return sql
 }
diff --git a/dataprovider/sqlite.go b/dataprovider/sqlite.go
index 9c811e38..85bd45ac 100644
--- a/dataprovider/sqlite.go
+++ b/dataprovider/sqlite.go
@@ -10,7 +10,6 @@ import (
 	"errors"
 	"fmt"
 	"path/filepath"
-	"strings"
 	"time"
 
 	// we import go-sqlite3 here to be able to disable SQLite support using a build tag
@@ -44,6 +43,11 @@ CREATE TABLE "{{admins}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "use
 "description" varchar(512) NULL, "password" varchar(255) NOT NULL, "email" varchar(255) NULL, "status" integer NOT NULL,
 "permissions" text NOT NULL, "filters" text NULL, "additional_info" text NULL, "last_login" bigint NOT NULL,
 "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL);
+CREATE TABLE "{{active_transfers}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "connection_id" varchar(100) NOT NULL,
+"transfer_id" bigint NOT NULL, "transfer_type" integer NOT NULL, "username" varchar(255) NOT NULL,
+"folder_name" varchar(255) NULL, "ip" varchar(50) NOT NULL, "truncated_size" bigint NOT NULL,
+"current_ul_size" bigint NOT NULL, "current_dl_size" bigint NOT NULL, "created_at" bigint NOT NULL,
+"updated_at" bigint NOT NULL);
 CREATE TABLE "{{defender_hosts}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "ip" varchar(50) NOT NULL UNIQUE,
 "ban_time" bigint NOT NULL, "updated_at" bigint NOT NULL);
 CREATE TABLE "{{defender_events}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "date_time" bigint NOT NULL,
@@ -52,18 +56,34 @@ DEFERRABLE INITIALLY DEFERRED);
 CREATE TABLE "{{folders}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "name" varchar(255) NOT NULL UNIQUE,
 "description" varchar(512) NULL, "path" text NULL, "used_quota_size" bigint NOT NULL, "used_quota_files" integer NOT NULL,
 "last_quota_update" bigint NOT NULL, "filesystem" text NULL);
+CREATE TABLE "{{groups}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "name" varchar(255) NOT NULL UNIQUE,
+"description" varchar(512) NULL, "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL, "user_settings" text NULL);
+CREATE TABLE "{{shared_sessions}}" ("key" varchar(128) NOT NULL PRIMARY KEY, "data" text NOT NULL,
+"type" integer NOT NULL, "timestamp" bigint NOT NULL);
 CREATE TABLE "{{users}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "username" varchar(255) NOT NULL UNIQUE,
 "status" integer NOT NULL, "expiration_date" bigint NOT NULL, "description" varchar(512) NULL, "password" text NULL,
 "public_keys" text NULL, "home_dir" text NOT NULL, "uid" bigint NOT NULL, "gid" bigint NOT NULL,
 "max_sessions" integer NOT NULL, "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL, "permissions" text NOT NULL,
 "used_quota_size" bigint NOT NULL, "used_quota_files" integer NOT NULL, "last_quota_update" bigint NOT NULL,
-"upload_bandwidth" integer NOT NULL, "download_bandwidth" integer NOT NULL, "last_login" bigint NOT NULL, "filters" text NULL,
-"filesystem" text NULL, "additional_info" text NULL, "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL,
-"email" varchar(255) NULL);
-CREATE TABLE "{{folders_mapping}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "virtual_path" text NOT NULL,
-"quota_size" bigint NOT NULL, "quota_files" integer NOT NULL, "folder_id" integer NOT NULL REFERENCES "{{folders}}" ("id")
-ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED, "user_id" integer NOT NULL REFERENCES "{{users}}" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-CONSTRAINT "{{prefix}}unique_mapping" UNIQUE ("user_id", "folder_id"));
+"upload_bandwidth" integer NOT NULL, "download_bandwidth" integer NOT NULL, "last_login" bigint NOT NULL,
+"filters" text NULL, "filesystem" text NULL, "additional_info" text NULL, "created_at" bigint NOT NULL,
+"updated_at" bigint NOT NULL, "email" varchar(255) NULL, "upload_data_transfer" integer NOT NULL,
+"download_data_transfer" integer NOT NULL, "total_data_transfer" integer NOT NULL, "used_upload_data_transfer" integer NOT NULL,
+"used_download_data_transfer" integer NOT NULL);
+CREATE TABLE "{{groups_folders_mapping}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
+"folder_id" integer NOT NULL REFERENCES "{{folders}}" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
+"group_id" integer NOT NULL REFERENCES "{{groups}}" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
+"virtual_path" text NOT NULL, "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL,
+CONSTRAINT "{{prefix}}unique_group_folder_mapping" UNIQUE ("group_id", "folder_id"));
+CREATE TABLE "{{users_groups_mapping}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
+"user_id" integer NOT NULL REFERENCES "users" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
+"group_id" integer NOT NULL REFERENCES "groups" ("id") ON DELETE NO ACTION,
+"group_type" integer NOT NULL, CONSTRAINT "{{prefix}}unique_user_group_mapping" UNIQUE ("user_id", "group_id"));
+CREATE TABLE "{{users_folders_mapping}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
+"user_id" integer NOT NULL REFERENCES "users" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
+"folder_id" integer NOT NULL REFERENCES "folders" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
+"virtual_path" text NOT NULL, "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL,
+CONSTRAINT "{{prefix}}unique_user_folder_mapping" UNIQUE ("user_id", "folder_id"));
 CREATE TABLE "{{shares}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "share_id" varchar(60) NOT NULL UNIQUE,
 "name" varchar(255) NOT NULL, "description" varchar(512) NULL, "scope" integer NOT NULL, "paths" text NOT NULL,
 "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL, "last_use_at" bigint NOT NULL, "expires_at" bigint NOT NULL,
@@ -74,8 +94,13 @@ CREATE TABLE "{{api_keys}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "n
 "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL, "last_use_at" bigint NOT NULL, "expires_at" bigint NOT NULL,
 "description" text NULL, "admin_id" integer NULL REFERENCES "{{admins}}" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
 "user_id" integer NULL REFERENCES "{{users}}" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED);
-CREATE INDEX "{{prefix}}folders_mapping_folder_id_idx" ON "{{folders_mapping}}" ("folder_id");
-CREATE INDEX "{{prefix}}folders_mapping_user_id_idx" ON "{{folders_mapping}}" ("user_id");
+CREATE INDEX "{{prefix}}groups_updated_at_idx" ON "{{groups}}" ("updated_at");
+CREATE INDEX "{{prefix}}users_folders_mapping_folder_id_idx" ON "{{users_folders_mapping}}" ("folder_id");
+CREATE INDEX "{{prefix}}users_folders_mapping_user_id_idx" ON "{{users_folders_mapping}}" ("user_id");
+CREATE INDEX "{{prefix}}users_groups_mapping_group_id_idx" ON "{{users_groups_mapping}}" ("group_id");
+CREATE INDEX "{{prefix}}users_groups_mapping_user_id_idx" ON "{{users_groups_mapping}}" ("user_id");
+CREATE INDEX "{{prefix}}groups_folders_mapping_folder_id_idx" ON "{{groups_folders_mapping}}" ("folder_id");
+CREATE INDEX "{{prefix}}groups_folders_mapping_group_id_idx" ON "{{groups_folders_mapping}}" ("group_id");
 CREATE INDEX "{{prefix}}api_keys_admin_id_idx" ON "{{api_keys}}" ("admin_id");
 CREATE INDEX "{{prefix}}api_keys_user_id_idx" ON "{{api_keys}}" ("user_id");
 CREATE INDEX "{{prefix}}users_updated_at_idx" ON "{{users}}" ("updated_at");
@@ -84,78 +109,13 @@ CREATE INDEX "{{prefix}}defender_hosts_updated_at_idx" ON "{{defender_hosts}}" (
 CREATE INDEX "{{prefix}}defender_hosts_ban_time_idx" ON "{{defender_hosts}}" ("ban_time");
 CREATE INDEX "{{prefix}}defender_events_date_time_idx" ON "{{defender_events}}" ("date_time");
 CREATE INDEX "{{prefix}}defender_events_host_id_idx" ON "{{defender_events}}" ("host_id");
-INSERT INTO {{schema_version}} (version) VALUES (15);
-`
-	sqliteV16SQL = `ALTER TABLE "{{users}}" ADD COLUMN "download_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ADD COLUMN "total_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ADD COLUMN "upload_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ADD COLUMN "used_download_data_transfer" integer DEFAULT 0 NOT NULL;
-ALTER TABLE "{{users}}" ADD COLUMN "used_upload_data_transfer" integer DEFAULT 0 NOT NULL;
-CREATE TABLE "{{active_transfers}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "connection_id" varchar(100) NOT NULL,
-"transfer_id" bigint NOT NULL, "transfer_type" integer NOT NULL, "username" varchar(255) NOT NULL,
-"folder_name" varchar(255) NULL, "ip" varchar(50) NOT NULL, "truncated_size" bigint NOT NULL,
-"current_ul_size" bigint NOT NULL, "current_dl_size" bigint NOT NULL, "created_at" bigint NOT NULL,
-"updated_at" bigint NOT NULL);
 CREATE INDEX "{{prefix}}active_transfers_connection_id_idx" ON "{{active_transfers}}" ("connection_id");
 CREATE INDEX "{{prefix}}active_transfers_transfer_id_idx" ON "{{active_transfers}}" ("transfer_id");
 CREATE INDEX "{{prefix}}active_transfers_updated_at_idx" ON "{{active_transfers}}" ("updated_at");
-`
-	sqliteV16DownSQL = `ALTER TABLE "{{users}}" DROP COLUMN "used_upload_data_transfer";
-ALTER TABLE "{{users}}" DROP COLUMN "used_download_data_transfer";
-ALTER TABLE "{{users}}" DROP COLUMN "upload_data_transfer";
-ALTER TABLE "{{users}}" DROP COLUMN "total_data_transfer";
-ALTER TABLE "{{users}}" DROP COLUMN "download_data_transfer";
-DROP TABLE "{{active_transfers}}";
-`
-	sqliteV17SQL = `CREATE TABLE "{{groups}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "name" varchar(255) NOT NULL UNIQUE,
-"description" varchar(512) NULL, "created_at" bigint NOT NULL, "updated_at" bigint NOT NULL, "user_settings" text NULL);
-CREATE TABLE "{{groups_folders_mapping}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
-"folder_id" integer NOT NULL REFERENCES "{{folders}}" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-"group_id" integer NOT NULL REFERENCES "{{groups}}" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-"virtual_path" text NOT NULL, "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL,
-CONSTRAINT "{{prefix}}unique_group_folder_mapping" UNIQUE ("group_id", "folder_id"));
-CREATE TABLE "{{users_groups_mapping}}" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
-"user_id" integer NOT NULL REFERENCES "users" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-"group_id" integer NOT NULL REFERENCES "groups" ("id") ON DELETE NO ACTION,
-"group_type" integer NOT NULL, CONSTRAINT "{{prefix}}unique_user_group_mapping" UNIQUE ("user_id", "group_id"));
-CREATE TABLE "new__folders_mapping" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
-"user_id" integer NOT NULL REFERENCES "users" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-"folder_id" integer NOT NULL REFERENCES "folders" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-"virtual_path" text NOT NULL, "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL,
-CONSTRAINT "{{prefix}}unique_user_folder_mapping" UNIQUE ("user_id", "folder_id"));
-INSERT INTO "new__folders_mapping" ("id", "virtual_path", "quota_size", "quota_files", "folder_id", "user_id") SELECT "id",
-"virtual_path", "quota_size", "quota_files", "folder_id", "user_id" FROM "{{folders_mapping}}";
-DROP TABLE "{{folders_mapping}}";
-ALTER TABLE "new__folders_mapping" RENAME TO "{{users_folders_mapping}}";
-CREATE INDEX "{{prefix}}groups_updated_at_idx" ON "{{groups}}" ("updated_at");
-CREATE INDEX "{{prefix}}users_folders_mapping_folder_id_idx" ON "{{users_folders_mapping}}" ("folder_id");
-CREATE INDEX "{{prefix}}users_folders_mapping_user_id_idx" ON "{{users_folders_mapping}}" ("user_id");
-CREATE INDEX "{{prefix}}users_groups_mapping_group_id_idx" ON "{{users_groups_mapping}}" ("group_id");
-CREATE INDEX "{{prefix}}users_groups_mapping_user_id_idx" ON "{{users_groups_mapping}}" ("user_id");
-CREATE INDEX "{{prefix}}groups_folders_mapping_folder_id_idx" ON "{{groups_folders_mapping}}" ("folder_id");
-CREATE INDEX "{{prefix}}groups_folders_mapping_group_id_idx" ON "{{groups_folders_mapping}}" ("group_id");
-`
-	sqliteV17DownSQL = `DROP TABLE "{{users_groups_mapping}}";
-DROP TABLE "{{groups_folders_mapping}}";
-DROP TABLE "{{groups}}";
-CREATE TABLE "new__folders_mapping" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
-"user_id" integer NOT NULL REFERENCES "users" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-"folder_id" integer NOT NULL REFERENCES "folders" ("id") ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-"virtual_path" text NOT NULL, "quota_size" bigint NOT NULL, "quota_files" integer NOT NULL,
-CONSTRAINT "{{prefix}}unique_folder_mapping" UNIQUE ("user_id", "folder_id"));
-INSERT INTO "new__folders_mapping" ("id", "virtual_path", "quota_size", "quota_files", "folder_id", "user_id") SELECT "id",
-"virtual_path", "quota_size", "quota_files", "folder_id", "user_id" FROM "{{users_folders_mapping}}";
-DROP TABLE "{{users_folders_mapping}}";
-ALTER TABLE "new__folders_mapping" RENAME TO "{{folders_mapping}}";
-CREATE INDEX "{{prefix}}folders_mapping_folder_id_idx" ON "{{folders_mapping}}" ("folder_id");
-CREATE INDEX "{{prefix}}folders_mapping_user_id_idx" ON "{{folders_mapping}}" ("user_id");
-`
-	sqliteV19SQL = `CREATE TABLE "{{shared_sessions}}" ("key" varchar(128) NOT NULL PRIMARY KEY, "data" text NOT NULL,
-"type" integer NOT NULL, "timestamp" bigint NOT NULL);
 CREATE INDEX "{{prefix}}shared_sessions_type_idx" ON "{{shared_sessions}}" ("type");
 CREATE INDEX "{{prefix}}shared_sessions_timestamp_idx" ON "{{shared_sessions}}" ("timestamp");
-	`
-	sqliteV19DownSQL = `DROP TABLE "{{shared_sessions}}";`
+INSERT INTO {{schema_version}} (version) VALUES (19);
+`
 )
 
 // SQLiteProvider defines the auth provider for SQLite database
@@ -506,20 +466,11 @@ func (p *SQLiteProvider) initializeDatabase() error {
 	if errors.Is(err, sql.ErrNoRows) {
 		return errSchemaVersionEmpty
 	}
-	logger.InfoToConsole("creating initial database schema, version 15")
-	providerLog(logger.LevelInfo, "creating initial database schema, version 15")
-	initialSQL := strings.ReplaceAll(sqliteInitialSQL, "{{schema_version}}", sqlTableSchemaVersion)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{admins}}", sqlTableAdmins)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{folders}}", sqlTableFolders)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{users}}", sqlTableUsers)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{folders_mapping}}", sqlTableFoldersMapping)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{api_keys}}", sqlTableAPIKeys)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{shares}}", sqlTableShares)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{defender_events}}", sqlTableDefenderEvents)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{defender_hosts}}", sqlTableDefenderHosts)
-	initialSQL = strings.ReplaceAll(initialSQL, "{{prefix}}", config.SQLTablesPrefix)
+	logger.InfoToConsole("creating initial database schema, version 19")
+	providerLog(logger.LevelInfo, "creating initial database schema, version 19")
+	sql := sqlReplaceAll(sqliteInitialSQL)
 
-	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, []string{initialSQL}, 15, true)
+	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, []string{sql}, 19, true)
 }
 
 func (p *SQLiteProvider) migrateDatabase() error { //nolint:dupl
@@ -532,19 +483,11 @@ func (p *SQLiteProvider) migrateDatabase() error { //nolint:dupl
 	case version == sqlDatabaseVersion:
 		providerLog(logger.LevelDebug, "sql database is up to date, current version: %v", version)
 		return ErrNoInitRequired
-	case version < 15:
+	case version < 19:
 		err = fmt.Errorf("database version %v is too old, please see the upgrading docs", version)
 		providerLog(logger.LevelError, "%v", err)
 		logger.ErrorToConsole("%v", err)
 		return err
-	case version == 15:
-		return updateSQLiteDatabaseFromV15(p.dbHandle)
-	case version == 16:
-		return updateSQLiteDatabaseFromV16(p.dbHandle)
-	case version == 17:
-		return updateSQLiteDatabaseFromV17(p.dbHandle)
-	case version == 18:
-		return updateSQLiteDatabaseFromV18(p.dbHandle)
 	default:
 		if version > sqlDatabaseVersion {
 			providerLog(logger.LevelError, "database version %v is newer than the supported one: %v", version,
@@ -567,14 +510,6 @@ func (p *SQLiteProvider) revertDatabase(targetVersion int) error {
 	}
 
 	switch dbVersion.Version {
-	case 16:
-		return downgradeSQLiteDatabaseFromV16(p.dbHandle)
-	case 17:
-		return downgradeSQLiteDatabaseFromV17(p.dbHandle)
-	case 18:
-		return downgradeSQLiteDatabaseFromV18(p.dbHandle)
-	case 19:
-		return downgradeSQLiteDatabaseFromV19(p.dbHandle)
 	default:
 		return fmt.Errorf("database version not handled: %v", dbVersion.Version)
 	}
@@ -585,144 +520,7 @@ func (p *SQLiteProvider) resetDatabase() error {
 	return sqlCommonExecSQLAndUpdateDBVersion(p.dbHandle, []string{sql}, 0, false)
 }
 
-func updateSQLiteDatabaseFromV15(dbHandle *sql.DB) error {
-	if err := updateSQLiteDatabaseFrom15To16(dbHandle); err != nil {
-		return err
-	}
-	return updateSQLiteDatabaseFromV16(dbHandle)
-}
-
-func updateSQLiteDatabaseFromV16(dbHandle *sql.DB) error {
-	if err := updateSQLiteDatabaseFrom16To17(dbHandle); err != nil {
-		return err
-	}
-	return updateSQLiteDatabaseFromV17(dbHandle)
-}
-
-func updateSQLiteDatabaseFromV17(dbHandle *sql.DB) error {
-	if err := updateSQLiteDatabaseFrom17To18(dbHandle); err != nil {
-		return err
-	}
-	return updateSQLiteDatabaseFromV18(dbHandle)
-}
-
-func updateSQLiteDatabaseFromV18(dbHandle *sql.DB) error {
-	return updateSQLiteDatabaseFrom18To19(dbHandle)
-}
-
-func downgradeSQLiteDatabaseFromV16(dbHandle *sql.DB) error {
-	return downgradeSQLiteDatabaseFrom16To15(dbHandle)
-}
-
-func downgradeSQLiteDatabaseFromV17(dbHandle *sql.DB) error {
-	if err := downgradeSQLiteDatabaseFrom17To16(dbHandle); err != nil {
-		return err
-	}
-	return downgradeSQLiteDatabaseFromV16(dbHandle)
-}
-
-func downgradeSQLiteDatabaseFromV18(dbHandle *sql.DB) error {
-	if err := downgradeSQLiteDatabaseFrom18To17(dbHandle); err != nil {
-		return err
-	}
-	return downgradeSQLiteDatabaseFromV17(dbHandle)
-}
-
-func downgradeSQLiteDatabaseFromV19(dbHandle *sql.DB) error {
-	if err := downgradeSQLiteDatabaseFrom19To18(dbHandle); err != nil {
-		return err
-	}
-	return downgradeSQLiteDatabaseFromV18(dbHandle)
-}
-
-func updateSQLiteDatabaseFrom15To16(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 15 -> 16")
-	providerLog(logger.LevelInfo, "updating database version: 15 -> 16")
-	sql := strings.ReplaceAll(sqliteV16SQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{active_transfers}}", sqlTableActiveTransfers)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 16, true)
-}
-
-func updateSQLiteDatabaseFrom16To17(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 16 -> 17")
-	providerLog(logger.LevelInfo, "updating database version: 16 -> 17")
-	if err := setPragmaFK(dbHandle, "OFF"); err != nil {
-		return err
-	}
-	sql := strings.ReplaceAll(sqliteV17SQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{groups}}", sqlTableGroups)
-	sql = strings.ReplaceAll(sql, "{{folders}}", sqlTableFolders)
-	sql = strings.ReplaceAll(sql, "{{folders_mapping}}", sqlTableFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_folders_mapping}}", sqlTableUsersFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_groups_mapping}}", sqlTableUsersGroupsMapping)
-	sql = strings.ReplaceAll(sql, "{{groups_folders_mapping}}", sqlTableGroupsFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	if err := sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 17, true); err != nil {
-		return err
-	}
-	return setPragmaFK(dbHandle, "ON")
-}
-
-func updateSQLiteDatabaseFrom17To18(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 17 -> 18")
-	providerLog(logger.LevelInfo, "updating database version: 17 -> 18")
-	if err := importGCSCredentials(); err != nil {
-		return err
-	}
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, nil, 18, true)
-}
-
-func updateSQLiteDatabaseFrom18To19(dbHandle *sql.DB) error {
-	logger.InfoToConsole("updating database version: 18 -> 19")
-	providerLog(logger.LevelInfo, "updating database version: 18 -> 19")
-	sql := strings.ReplaceAll(sqliteV19SQL, "{{shared_sessions}}", sqlTableSharedSessions)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 19, true)
-}
-
-func downgradeSQLiteDatabaseFrom16To15(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 16 -> 15")
-	providerLog(logger.LevelInfo, "downgrading database version: 16 -> 15")
-	sql := strings.ReplaceAll(sqliteV16DownSQL, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{active_transfers}}", sqlTableActiveTransfers)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 15, false)
-}
-
-func downgradeSQLiteDatabaseFrom17To16(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 17 -> 16")
-	providerLog(logger.LevelInfo, "downgrading database version: 17 -> 16")
-	if err := setPragmaFK(dbHandle, "OFF"); err != nil {
-		return err
-	}
-	sql := strings.ReplaceAll(sqliteV17DownSQL, "{{groups}}", sqlTableGroups)
-	sql = strings.ReplaceAll(sql, "{{users}}", sqlTableUsers)
-	sql = strings.ReplaceAll(sql, "{{folders}}", sqlTableFolders)
-	sql = strings.ReplaceAll(sql, "{{folders_mapping}}", sqlTableFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_folders_mapping}}", sqlTableUsersFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{users_groups_mapping}}", sqlTableUsersGroupsMapping)
-	sql = strings.ReplaceAll(sql, "{{groups_folders_mapping}}", sqlTableGroupsFoldersMapping)
-	sql = strings.ReplaceAll(sql, "{{prefix}}", config.SQLTablesPrefix)
-	if err := sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 16, false); err != nil {
-		return err
-	}
-	return setPragmaFK(dbHandle, "ON")
-}
-
-func downgradeSQLiteDatabaseFrom18To17(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 18 -> 17")
-	providerLog(logger.LevelInfo, "downgrading database version: 18 -> 17")
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, nil, 17, false)
-}
-
-func downgradeSQLiteDatabaseFrom19To18(dbHandle *sql.DB) error {
-	logger.InfoToConsole("downgrading database version: 19 -> 18")
-	providerLog(logger.LevelInfo, "downgrading database version: 19 -> 18")
-	sql := strings.ReplaceAll(sqliteV19DownSQL, "{{shared_sessions}}", sqlTableSharedSessions)
-	return sqlCommonExecSQLAndUpdateDBVersion(dbHandle, []string{sql}, 18, false)
-}
-
-func setPragmaFK(dbHandle *sql.DB, value string) error {
+/*func setPragmaFK(dbHandle *sql.DB, value string) error {
 	ctx, cancel := context.WithTimeout(context.Background(), longSQLQueryTimeout)
 	defer cancel()
 
@@ -730,4 +528,4 @@ func setPragmaFK(dbHandle *sql.DB, value string) error {
 
 	_, err := dbHandle.ExecContext(ctx, sql)
 	return err
-}
+}*/
diff --git a/dataprovider/user.go b/dataprovider/user.go
index c8ab0611..3a9030ed 100644
--- a/dataprovider/user.go
+++ b/dataprovider/user.go
@@ -10,7 +10,6 @@ import (
 	"net"
 	"os"
 	"path"
-	"path/filepath"
 	"strings"
 	"time"
 
@@ -1833,8 +1832,3 @@ func (u *User) getACopy() User {
 func (u *User) GetEncryptionAdditionalData() string {
 	return u.Username
 }
-
-// GetGCSCredentialsFilePath returns the path for GCS credentials
-func (u *User) GetGCSCredentialsFilePath() string {
-	return filepath.Join(credentialsDirPath, fmt.Sprintf("%v_gcs_credentials.json", u.Username))
-}
diff --git a/go.mod b/go.mod
index a7a89274..91c2f497 100644
--- a/go.mod
+++ b/go.mod
@@ -114,7 +114,7 @@ require (
 	github.com/hashicorp/yamux v0.0.0-20211028200310-0bc27b27de87 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
-	github.com/klauspost/cpuid/v2 v2.0.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.0.13 // indirect
 	github.com/kr/fs v0.1.0 // indirect
 	github.com/lestrrat-go/backoff/v2 v2.0.8 // indirect
 	github.com/lestrrat-go/blackmagic v1.0.1 // indirect
diff --git a/go.sum b/go.sum
index d0651e78..0b086305 100644
--- a/go.sum
+++ b/go.sum
@@ -536,8 +536,8 @@ github.com/klauspost/compress v1.15.1/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47e
 github.com/klauspost/compress v1.15.6 h1:6D9PcO8QWu0JyaQ2zUMmu16T1T+zjjEpP91guRsvDfY=
 github.com/klauspost/compress v1.15.6/go.mod h1:PhcZ0MbTNciWF3rruxRgKxI5NkcHHrHUDtV4Yw2GlzU=
 github.com/klauspost/cpuid/v2 v2.0.4/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
-github.com/klauspost/cpuid/v2 v2.0.12 h1:p9dKCg8i4gmOxtv35DvrYoWqYzQrvEVdjQ762Y0OqZE=
-github.com/klauspost/cpuid/v2 v2.0.12/go.mod h1:g2LTdtYhdyuGPqyWyv7qRAmj1WBqxuObKfj5c0PQa7c=
+github.com/klauspost/cpuid/v2 v2.0.13 h1:1XxvOiqXZ8SULZUKim/wncr3wZ38H4yCuVDvKdK9OGs=
+github.com/klauspost/cpuid/v2 v2.0.13/go.mod h1:g2LTdtYhdyuGPqyWyv7qRAmj1WBqxuObKfj5c0PQa7c=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
diff --git a/httpd/httpd_test.go b/httpd/httpd_test.go
index afc5a166..85e0112a 100644
--- a/httpd/httpd_test.go
+++ b/httpd/httpd_test.go
@@ -220,15 +220,13 @@ qwlk5iw/jQekxThg==
 )
 
 var (
-	defaultPerms       = []string{dataprovider.PermAny}
-	homeBasePath       string
-	backupsPath        string
-	credentialsPath    string
-	testServer         *httptest.Server
-	providerDriverName string
-	postConnectPath    string
-	preActionPath      string
-	lastResetCode      string
+	defaultPerms    = []string{dataprovider.PermAny}
+	homeBasePath    string
+	backupsPath     string
+	testServer      *httptest.Server
+	postConnectPath string
+	preActionPath   string
+	lastResetCode   string
 )
 
 type fakeConnection struct {
@@ -311,10 +309,6 @@ func TestMain(m *testing.M) {
 		pluginsConfig[0].Cmd += ".exe"
 	}
 	providerConf := config.GetProviderConf()
-	credentialsPath = filepath.Join(os.TempDir(), "test_credentials")
-	providerConf.CredentialsPath = credentialsPath
-	providerDriverName = providerConf.Driver
-	os.RemoveAll(credentialsPath) //nolint:errcheck
 	logger.InfoToConsole("Starting HTTPD tests, provider: %v", providerConf.Driver)
 
 	err = common.Initialize(config.GetCommonConfig(), 0)
@@ -439,7 +433,6 @@ func TestMain(m *testing.M) {
 	exitCode := m.Run()
 	os.Remove(logfilePath)
 	os.RemoveAll(backupsPath)
-	os.RemoveAll(credentialsPath)
 	os.Remove(certPath)
 	os.Remove(keyPath)
 	os.Remove(hostKeyPath)
@@ -1911,9 +1904,6 @@ func TestPasswordValidations(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf = config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 }
@@ -1965,8 +1955,6 @@ func TestAdminPasswordHashing(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf = config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
 	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
@@ -2276,10 +2264,6 @@ func TestAddUserInvalidFsConfig(t *testing.T) {
 	u.FsConfig.S3Config.Bucket = ""
 	_, _, err := httpdtest.AddUser(u, http.StatusBadRequest)
 	assert.NoError(t, err)
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
-	err = os.MkdirAll(credentialsPath, 0700)
-	assert.NoError(t, err)
 	u.FsConfig.S3Config.Bucket = "testbucket"
 	u.FsConfig.S3Config.Region = "eu-west-1"     //nolint:goconst
 	u.FsConfig.S3Config.AccessKey = "access-key" //nolint:goconst
@@ -4491,9 +4475,6 @@ func TestNamingRules(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf = config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 	if config.GetProviderConf().Driver == dataprovider.MemoryDataProviderName {
@@ -4708,9 +4689,6 @@ func TestSaveErrors(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf = config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 	if config.GetProviderConf().Driver == dataprovider.MemoryDataProviderName {
@@ -4800,9 +4778,6 @@ func TestUserBaseDir(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf = config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 }
@@ -4847,9 +4822,6 @@ func TestQuotaTrackingDisabled(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf = config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 }
@@ -5037,9 +5009,6 @@ func TestProviderErrors(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf := config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 	httpdtest.SetJWTToken("")
@@ -5197,10 +5166,7 @@ func TestDumpdata(t *testing.T) {
 	err = config.LoadConfig(configDir, "")
 	assert.NoError(t, err)
 	providerConf = config.GetProviderConf()
-	providerConf.CredentialsPath = credentialsPath
 	providerConf.BackupsPath = backupsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 }
@@ -5373,10 +5339,7 @@ func TestDefenderAPIErrors(t *testing.T) {
 		err = config.LoadConfig(configDir, "")
 		assert.NoError(t, err)
 		providerConf := config.GetProviderConf()
-		providerConf.CredentialsPath = credentialsPath
 		providerConf.BackupsPath = backupsPath
-		err = os.RemoveAll(credentialsPath)
-		assert.NoError(t, err)
 		err = dataprovider.Initialize(providerConf, configDir, true)
 		assert.NoError(t, err)
 
@@ -13587,9 +13550,6 @@ func TestWebAdminSetupMock(t *testing.T) {
 	err = config.LoadConfig(configDir, "")
 	assert.NoError(t, err)
 	providerConf := config.GetProviderConf()
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 	// now the setup page must be rendered
@@ -13679,9 +13639,6 @@ func TestWebAdminSetupMock(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf = config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 	req, err = http.NewRequest(http.MethodPost, webAdminSetupPath, bytes.NewBuffer([]byte(form.Encode())))
@@ -16302,9 +16259,6 @@ func TestUserSaveFromTemplateMock(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf := config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 }
@@ -16612,9 +16566,6 @@ func TestFolderSaveFromTemplateMock(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf := config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 }
@@ -18961,9 +18912,6 @@ func TestProviderClosedMock(t *testing.T) {
 	assert.NoError(t, err)
 	providerConf := config.GetProviderConf()
 	providerConf.BackupsPath = backupsPath
-	providerConf.CredentialsPath = credentialsPath
-	err = os.RemoveAll(credentialsPath)
-	assert.NoError(t, err)
 	err = dataprovider.Initialize(providerConf, configDir, true)
 	assert.NoError(t, err)
 }
diff --git a/pkgs/build.sh b/pkgs/build.sh
index deb8ecb6..9f99261d 100755
--- a/pkgs/build.sh
+++ b/pkgs/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-NFPM_VERSION=2.15.1
+NFPM_VERSION=2.16.0
 NFPM_ARCH=${NFPM_ARCH:-amd64}
 if [ -z ${SFTPGO_VERSION} ]
 then
@@ -40,7 +40,6 @@ cp ${BASE_DIR}/sftpgo.json .
 sed -i "s|sftpgo.db|/var/lib/sftpgo/sftpgo.db|" sftpgo.json
 sed -i "s|\"users_base_dir\": \"\",|\"users_base_dir\": \"/srv/sftpgo/data\",|" sftpgo.json
 sed -i "s|\"backups\"|\"/srv/sftpgo/backups\"|" sftpgo.json
-sed -i "s|\"credentials\"|\"/var/lib/sftpgo/credentials\"|" sftpgo.json
 sed -i "s|\"certs\"|\"/var/lib/sftpgo/certs\"|" sftpgo.json
 
 cat >nfpm.yaml <<EOF
diff --git a/sftpgo.json b/sftpgo.json
index 1fe0ca97..691ece99 100644
--- a/sftpgo.json
+++ b/sftpgo.json
@@ -202,7 +202,6 @@
     },
     "external_auth_hook": "",
     "external_auth_scope": 0,
-    "credentials_path": "credentials",
     "pre_login_hook": "",
     "post_login_hook": "",
     "post_login_scope": 0,
diff --git a/vfs/folder.go b/vfs/folder.go
index dbdd233b..2bb19c48 100644
--- a/vfs/folder.go
+++ b/vfs/folder.go
@@ -2,7 +2,6 @@ package vfs
 
 import (
 	"fmt"
-	"path/filepath"
 	"strconv"
 	"strings"
 
@@ -37,11 +36,6 @@ func (v *BaseVirtualFolder) GetEncryptionAdditionalData() string {
 	return fmt.Sprintf("folder_%v", v.Name)
 }
 
-// GetGCSCredentialsFilePath returns the path for GCS credentials
-func (v *BaseVirtualFolder) GetGCSCredentialsFilePath() string {
-	return filepath.Join(credentialsDirPath, "folders", fmt.Sprintf("%v_gcs_credentials.json", v.Name))
-}
-
 // GetACopy returns a copy
 func (v *BaseVirtualFolder) GetACopy() BaseVirtualFolder {
 	users := make([]string, len(v.Users))
diff --git a/vfs/vfs.go b/vfs/vfs.go
index c98155ff..19a82c72 100644
--- a/vfs/vfs.go
+++ b/vfs/vfs.go
@@ -31,22 +31,11 @@ var (
 	// ErrStorageSizeUnavailable is returned if the storage backend does not support getting the size
 	ErrStorageSizeUnavailable = errors.New("unable to get available size for this storage backend")
 	// ErrVfsUnsupported defines the error for an unsupported VFS operation
-	ErrVfsUnsupported  = errors.New("not supported")
-	credentialsDirPath string
-	tempPath           string
-	sftpFingerprints   []string
+	ErrVfsUnsupported = errors.New("not supported")
+	tempPath          string
+	sftpFingerprints  []string
 )
 
-// SetCredentialsDirPath sets the credentials dir path
-func SetCredentialsDirPath(credentialsPath string) {
-	credentialsDirPath = credentialsPath
-}
-
-// GetCredentialsDirPath returns the credentials dir path
-func GetCredentialsDirPath() string {
-	return credentialsDirPath
-}
-
 // SetTempPath sets the path for temporary files
 func SetTempPath(fsPath string) {
 	tempPath = fsPath