diff --git a/windows/service.go b/windows/service.go
index 9a59b42f..03383f1d 100644
--- a/windows/service.go
+++ b/windows/service.go
@@ -200,12 +200,19 @@ type SC_ACTION struct {
 	Delay uint32
 }
 
+type QUERY_SERVICE_LOCK_STATUS struct {
+	IsLocked     uint32
+	LockOwner    *uint16
+	LockDuration uint32
+}
+
 //sys	CloseServiceHandle(handle Handle) (err error) = advapi32.CloseServiceHandle
 //sys	CreateService(mgr Handle, serviceName *uint16, displayName *uint16, access uint32, srvType uint32, startType uint32, errCtl uint32, pathName *uint16, loadOrderGroup *uint16, tagId *uint32, dependencies *uint16, serviceStartName *uint16, password *uint16) (handle Handle, err error) [failretval==0] = advapi32.CreateServiceW
 //sys	OpenService(mgr Handle, serviceName *uint16, access uint32) (handle Handle, err error) [failretval==0] = advapi32.OpenServiceW
 //sys	DeleteService(service Handle) (err error) = advapi32.DeleteService
 //sys	StartService(service Handle, numArgs uint32, argVectors **uint16) (err error) = advapi32.StartServiceW
 //sys	QueryServiceStatus(service Handle, status *SERVICE_STATUS) (err error) = advapi32.QueryServiceStatus
+//sys	QueryServiceLockStatus(mgr Handle, lockStatus *QUERY_SERVICE_LOCK_STATUS, bufSize uint32, bytesNeeded *uint32) (err error) = advapi32.QueryServiceLockStatusW
 //sys	ControlService(service Handle, control uint32, status *SERVICE_STATUS) (err error) = advapi32.ControlService
 //sys	StartServiceCtrlDispatcher(serviceTable *SERVICE_TABLE_ENTRY) (err error) = advapi32.StartServiceCtrlDispatcherW
 //sys	SetServiceStatus(service Handle, serviceStatus *SERVICE_STATUS) (err error) = advapi32.SetServiceStatus
diff --git a/windows/svc/mgr/mgr.go b/windows/svc/mgr/mgr.go
index 24638d72..ad4cd6b6 100644
--- a/windows/svc/mgr/mgr.go
+++ b/windows/svc/mgr/mgr.go
@@ -13,6 +13,7 @@ package mgr
 
 import (
 	"syscall"
+	"time"
 	"unicode/utf16"
 	"unsafe"
 
@@ -48,6 +49,36 @@ func (m *Mgr) Disconnect() error {
 	return windows.CloseServiceHandle(m.Handle)
 }
 
+type LockStatus struct {
+	IsLocked bool          // Whether the SCM has been locked.
+	Age      time.Duration // For how long the SCM has been locked.
+	Owner    string        // The name of the user who has locked the SCM.
+}
+
+// LockStatus returns whether the service control manager is locked by
+// the system, for how long, and by whom. A locked SCM indicates that
+// most service actions will block until the system unlocks the SCM.
+func (m *Mgr) LockStatus() (*LockStatus, error) {
+	bytesNeeded := uint32(unsafe.Sizeof(windows.QUERY_SERVICE_LOCK_STATUS{}) + 1024)
+	for {
+		bytes := make([]byte, bytesNeeded)
+		lockStatus := (*windows.QUERY_SERVICE_LOCK_STATUS)(unsafe.Pointer(&bytes[0]))
+		err := windows.QueryServiceLockStatus(m.Handle, lockStatus, uint32(len(bytes)), &bytesNeeded)
+		if err == windows.ERROR_INSUFFICIENT_BUFFER && bytesNeeded >= uint32(unsafe.Sizeof(windows.QUERY_SERVICE_LOCK_STATUS{})) {
+			continue
+		}
+		if err != nil {
+			return nil, err
+		}
+		status := &LockStatus{
+			IsLocked: lockStatus.IsLocked != 0,
+			Age:      time.Duration(lockStatus.LockDuration) * time.Second,
+			Owner:    windows.UTF16ToString((*[(1 << 30) - 1]uint16)(unsafe.Pointer(lockStatus.LockOwner))[:]),
+		}
+		return status, nil
+	}
+}
+
 func toPtr(s string) *uint16 {
 	if len(s) == 0 {
 		return nil
diff --git a/windows/zsyscall_windows.go b/windows/zsyscall_windows.go
index 6c35b90c..376bd048 100644
--- a/windows/zsyscall_windows.go
+++ b/windows/zsyscall_windows.go
@@ -60,6 +60,7 @@ var (
 	procDeleteService                      = modadvapi32.NewProc("DeleteService")
 	procStartServiceW                      = modadvapi32.NewProc("StartServiceW")
 	procQueryServiceStatus                 = modadvapi32.NewProc("QueryServiceStatus")
+	procQueryServiceLockStatusW            = modadvapi32.NewProc("QueryServiceLockStatusW")
 	procControlService                     = modadvapi32.NewProc("ControlService")
 	procStartServiceCtrlDispatcherW        = modadvapi32.NewProc("StartServiceCtrlDispatcherW")
 	procSetServiceStatus                   = modadvapi32.NewProc("SetServiceStatus")
@@ -425,6 +426,18 @@ func QueryServiceStatus(service Handle, status *SERVICE_STATUS) (err error) {
 	return
 }
 
+func QueryServiceLockStatus(mgr Handle, lockStatus *QUERY_SERVICE_LOCK_STATUS, bufSize uint32, bytesNeeded *uint32) (err error) {
+	r1, _, e1 := syscall.Syscall6(procQueryServiceLockStatusW.Addr(), 4, uintptr(mgr), uintptr(unsafe.Pointer(lockStatus)), uintptr(bufSize), uintptr(unsafe.Pointer(bytesNeeded)), 0, 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
 func ControlService(service Handle, control uint32, status *SERVICE_STATUS) (err error) {
 	r1, _, e1 := syscall.Syscall(procControlService.Addr(), 3, uintptr(service), uintptr(control), uintptr(unsafe.Pointer(status)))
 	if r1 == 0 {