diff --git a/vendor.conf b/vendor.conf
index cad8d3aeba..7f681d72c7 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -1,7 +1,7 @@
 # the following lines are in sorted order, FYI
 github.com/Azure/go-ansiterm d6e3b3328b783f23731bc4d058875b0371ff8109
-github.com/Microsoft/hcsshim v0.6.12
-github.com/Microsoft/go-winio v0.4.9
+github.com/Microsoft/hcsshim v0.6.14
+github.com/Microsoft/go-winio v0.4.10
 github.com/docker/libtrust 9cbd2a1374f46905c68a4eb3694a130610adc62a
 github.com/go-check/check 4ed411733c5785b40214c70bce814c3a3a689609 https://github.com/cpuguy83/check.git
 github.com/golang/gddo 9b12a26f3fbd7397dee4e20939ddca719d840d2a
diff --git a/vendor/github.com/Microsoft/go-winio/backuptar/tar.go b/vendor/github.com/Microsoft/go-winio/backuptar/tar.go
index 53da908f14..d6566dbf0c 100644
--- a/vendor/github.com/Microsoft/go-winio/backuptar/tar.go
+++ b/vendor/github.com/Microsoft/go-winio/backuptar/tar.go
@@ -303,7 +303,7 @@ func FileInfoFromHeader(hdr *tar.Header) (name string, size int64, fileInfo *win
 		if err != nil {
 			return "", 0, nil, err
 		}
-		fileInfo.FileAttributes = uintptr(attr)
+		fileInfo.FileAttributes = uint32(attr)
 	} else {
 		if hdr.Typeflag == tar.TypeDir {
 			fileInfo.FileAttributes |= syscall.FILE_ATTRIBUTE_DIRECTORY
diff --git a/vendor/github.com/Microsoft/go-winio/fileinfo.go b/vendor/github.com/Microsoft/go-winio/fileinfo.go
index b1d60abb83..ada2fbab63 100644
--- a/vendor/github.com/Microsoft/go-winio/fileinfo.go
+++ b/vendor/github.com/Microsoft/go-winio/fileinfo.go
@@ -20,7 +20,8 @@ const (
 // FileBasicInfo contains file access time and file attributes information.
 type FileBasicInfo struct {
 	CreationTime, LastAccessTime, LastWriteTime, ChangeTime syscall.Filetime
-	FileAttributes                                          uintptr // includes padding
+	FileAttributes                                          uint32
+	pad                                                     uint32 // padding
 }
 
 // GetFileBasicInfo retrieves times and attributes for a file.
diff --git a/vendor/github.com/Microsoft/hcsshim/container.go b/vendor/github.com/Microsoft/hcsshim/container.go
index 3354f70efc..8cc6ce2900 100644
--- a/vendor/github.com/Microsoft/hcsshim/container.go
+++ b/vendor/github.com/Microsoft/hcsshim/container.go
@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"strconv"
 	"sync"
 	"syscall"
 	"time"
@@ -136,8 +137,26 @@ type ResourceModificationRequestResponse struct {
 // is merged in the CreateContainer call to HCS.
 var createContainerAdditionalJSON string
 
+// currentContainerStarts is used to limit the number of concurrent container
+// starts.
+var currentContainerStarts containerStarts
+
+type containerStarts struct {
+	maxParallel int
+	inProgress  int
+	sync.Mutex
+}
+
 func init() {
 	createContainerAdditionalJSON = os.Getenv("HCSSHIM_CREATECONTAINER_ADDITIONALJSON")
+	mpsS := os.Getenv("HCSSHIM_MAX_PARALLEL_START")
+	if len(mpsS) > 0 {
+		mpsI, err := strconv.Atoi(mpsS)
+		if err != nil || mpsI < 0 {
+			return
+		}
+		currentContainerStarts.maxParallel = mpsI
+	}
 }
 
 // CreateContainer creates a new container with the given configuration but does not start it.
@@ -325,6 +344,32 @@ func (container *container) Start() error {
 		return makeContainerError(container, operation, "", ErrAlreadyClosed)
 	}
 
+	// This is a very simple backoff-retry loop to limit the number
+	// of parallel container starts if environment variable
+	// HCSSHIM_MAX_PARALLEL_START is set to a positive integer.
+	// It should generally only be used as a workaround to various
+	// platform issues that exist between RS1 and RS4 as of Aug 2018.
+	if currentContainerStarts.maxParallel > 0 {
+		for {
+			currentContainerStarts.Lock()
+			if currentContainerStarts.inProgress < currentContainerStarts.maxParallel {
+				currentContainerStarts.inProgress++
+				currentContainerStarts.Unlock()
+				break
+			}
+			if currentContainerStarts.inProgress == currentContainerStarts.maxParallel {
+				currentContainerStarts.Unlock()
+				time.Sleep(100 * time.Millisecond)
+			}
+		}
+		// Make sure we decrement the count when we are done.
+		defer func() {
+			currentContainerStarts.Lock()
+			currentContainerStarts.inProgress--
+			currentContainerStarts.Unlock()
+		}()
+	}
+
 	var resultp *uint16
 	err := hcsStartComputeSystem(container.handle, "", &resultp)
 	err = processAsyncHcsResult(err, resultp, container.callbackNumber, hcsNotificationSystemStartCompleted, &defaultTimeout)
diff --git a/vendor/github.com/Microsoft/hcsshim/interface.go b/vendor/github.com/Microsoft/hcsshim/interface.go
index b8fa736447..6eece2a285 100644
--- a/vendor/github.com/Microsoft/hcsshim/interface.go
+++ b/vendor/github.com/Microsoft/hcsshim/interface.go
@@ -6,6 +6,30 @@ import (
 	"time"
 )
 
+// RegistryKey is used to specify registry key name
+type RegistryKey struct {
+	Hive     string
+	Name     string
+	Volatile bool `json:",omitempty"`
+}
+
+// RegistryKey is used to specify registry key name
+type RegistryValue struct {
+	Key         RegistryKey
+	Name        string
+	Type        string
+	StringValue string  `json:",omitempty"`
+	BinaryValue []byte  `json:",omitempty"`
+	DWordValue  *uint32 `json:",omitempty"`
+	QWordValue  *uint64 `json:",omitempty"`
+	CustomType  *uint32 `json:",omitempty"`
+}
+
+type RegistryChanges struct {
+	AddValues  []RegistryValue `json:",omitempty"`
+	DeleteKeys []RegistryValue `json:",omitempty"`
+}
+
 // ProcessConfig is used as both the input of Container.CreateProcess
 // and to convert the parameters to JSON for passing onto the HCS
 type ProcessConfig struct {
@@ -104,6 +128,7 @@ type ContainerConfig struct {
 	TerminateOnLastHandleClosed bool                `json:",omitempty"` // Should HCS terminate the container once all handles have been closed
 	MappedVirtualDisks          []MappedVirtualDisk `json:",omitempty"` // Array of virtual disks to mount at start
 	AssignedDevices             []AssignedDevice    `json:",omitempty"` // Array of devices to assign. NOTE: Support added in RS5
+	RegistryChanges             *RegistryChanges    `json:",omitempty"` // Registry changes to be applied to the container
 }
 
 type ComputeSystemQuery struct {
diff --git a/vendor/github.com/Microsoft/hcsshim/legacy.go b/vendor/github.com/Microsoft/hcsshim/legacy.go
index 0b23b6c4d0..81ea32a496 100644
--- a/vendor/github.com/Microsoft/hcsshim/legacy.go
+++ b/vendor/github.com/Microsoft/hcsshim/legacy.go
@@ -283,7 +283,7 @@ func (r *legacyLayerReader) Next() (path string, size int64, fileInfo *winio.Fil
 		if err != nil {
 			return
 		}
-		fileInfo.FileAttributes = uintptr(attr)
+		fileInfo.FileAttributes = attr
 		beginning := int64(4)
 
 		// Find the accurate file size.