diff --git a/windows/syscall_windows.go b/windows/syscall_windows.go
index 6395a031d..1da382192 100644
--- a/windows/syscall_windows.go
+++ b/windows/syscall_windows.go
@@ -165,6 +165,7 @@ func NewCallbackCDecl(fn interface{}) uintptr {
 //sys	CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile Handle) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW
 //sys	CreateNamedPipe(name *uint16, flags uint32, pipeMode uint32, maxInstances uint32, outSize uint32, inSize uint32, defaultTimeout uint32, sa *SecurityAttributes) (handle Handle, err error)  [failretval==InvalidHandle] = CreateNamedPipeW
 //sys	ConnectNamedPipe(pipe Handle, overlapped *Overlapped) (err error)
+//sys	DisconnectNamedPipe(pipe Handle) (err error)
 //sys	GetNamedPipeInfo(pipe Handle, flags *uint32, outSize *uint32, inSize *uint32, maxInstances *uint32) (err error)
 //sys	GetNamedPipeHandleState(pipe Handle, state *uint32, curInstances *uint32, maxCollectionCount *uint32, collectDataTimeout *uint32, userName *uint16, maxUserNameSize uint32) (err error) = GetNamedPipeHandleStateW
 //sys	SetNamedPipeHandleState(pipe Handle, state *uint32, maxCollectionCount *uint32, collectDataTimeout *uint32) (err error) = SetNamedPipeHandleState
diff --git a/windows/zsyscall_windows.go b/windows/zsyscall_windows.go
index e8791c82c..655a8d7db 100644
--- a/windows/zsyscall_windows.go
+++ b/windows/zsyscall_windows.go
@@ -212,6 +212,7 @@ var (
 	procDeleteProcThreadAttributeList                        = modkernel32.NewProc("DeleteProcThreadAttributeList")
 	procDeleteVolumeMountPointW                              = modkernel32.NewProc("DeleteVolumeMountPointW")
 	procDeviceIoControl                                      = modkernel32.NewProc("DeviceIoControl")
+	procDisconnectNamedPipe                                  = modkernel32.NewProc("DisconnectNamedPipe")
 	procDuplicateHandle                                      = modkernel32.NewProc("DuplicateHandle")
 	procExitProcess                                          = modkernel32.NewProc("ExitProcess")
 	procExpandEnvironmentStringsW                            = modkernel32.NewProc("ExpandEnvironmentStringsW")
@@ -342,7 +343,6 @@ var (
 	procSetDefaultDllDirectories                             = modkernel32.NewProc("SetDefaultDllDirectories")
 	procSetDllDirectoryW                                     = modkernel32.NewProc("SetDllDirectoryW")
 	procSetEndOfFile                                         = modkernel32.NewProc("SetEndOfFile")
-	procSetFileValidData                                     = modkernel32.NewProc("SetFileValidData")
 	procSetEnvironmentVariableW                              = modkernel32.NewProc("SetEnvironmentVariableW")
 	procSetErrorMode                                         = modkernel32.NewProc("SetErrorMode")
 	procSetEvent                                             = modkernel32.NewProc("SetEvent")
@@ -351,6 +351,7 @@ var (
 	procSetFileInformationByHandle                           = modkernel32.NewProc("SetFileInformationByHandle")
 	procSetFilePointer                                       = modkernel32.NewProc("SetFilePointer")
 	procSetFileTime                                          = modkernel32.NewProc("SetFileTime")
+	procSetFileValidData                                     = modkernel32.NewProc("SetFileValidData")
 	procSetHandleInformation                                 = modkernel32.NewProc("SetHandleInformation")
 	procSetInformationJobObject                              = modkernel32.NewProc("SetInformationJobObject")
 	procSetNamedPipeHandleState                              = modkernel32.NewProc("SetNamedPipeHandleState")
@@ -1845,6 +1846,14 @@ func DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBuff
 	return
 }
 
+func DisconnectNamedPipe(pipe Handle) (err error) {
+	r1, _, e1 := syscall.Syscall(procDisconnectNamedPipe.Addr(), 1, uintptr(pipe), 0, 0)
+	if r1 == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
 func DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error) {
 	var _p0 uint32
 	if bInheritHandle {
@@ -2989,14 +2998,6 @@ func SetEndOfFile(handle Handle) (err error) {
 	return
 }
 
-func SetFileValidData(handle Handle, validDataLength int64) (err error) {
-	r1, _, e1 := syscall.Syscall(procSetFileValidData.Addr(), 2, uintptr(handle), uintptr(validDataLength), 0)
-	if r1 == 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
 func SetEnvironmentVariable(name *uint16, value *uint16) (err error) {
 	r1, _, e1 := syscall.Syscall(procSetEnvironmentVariableW.Addr(), 2, uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(value)), 0)
 	if r1 == 0 {
@@ -3060,6 +3061,14 @@ func SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetim
 	return
 }
 
+func SetFileValidData(handle Handle, validDataLength int64) (err error) {
+	r1, _, e1 := syscall.Syscall(procSetFileValidData.Addr(), 2, uintptr(handle), uintptr(validDataLength), 0)
+	if r1 == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
 func SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error) {
 	r1, _, e1 := syscall.Syscall(procSetHandleInformation.Addr(), 3, uintptr(handle), uintptr(mask), uintptr(flags))
 	if r1 == 0 {