diff --git a/SMBLibrary/NTFileStore/Adapter/NTFileSystemAdapter.cs b/SMBLibrary/NTFileStore/Adapter/NTFileSystemAdapter.cs
index 49dbc57..0e237ed 100644
--- a/SMBLibrary/NTFileStore/Adapter/NTFileSystemAdapter.cs
+++ b/SMBLibrary/NTFileStore/Adapter/NTFileSystemAdapter.cs
@@ -382,6 +382,16 @@ namespace SMBLibrary
             return NTStatus.STATUS_SUCCESS;
         }
 
+        public NTStatus LockFile(object handle, long byteOffset, long length, bool exclusiveLock)
+        {
+            return NTStatus.STATUS_NOT_SUPPORTED;
+        }
+
+        public NTStatus UnlockFile(object handle, long byteOffset, long length)
+        {
+            return NTStatus.STATUS_NOT_SUPPORTED;
+        }
+
         public NTStatus NotifyChange(out object ioRequest, object handle, NotifyChangeFilter completionFilter, bool watchTree, int outputBufferSize, OnNotifyChangeCompleted onNotifyChangeCompleted, object context)
         {
             ioRequest = null;
diff --git a/SMBLibrary/NTFileStore/INTFileStore.cs b/SMBLibrary/NTFileStore/INTFileStore.cs
index 32c4e52..76c1349 100644
--- a/SMBLibrary/NTFileStore/INTFileStore.cs
+++ b/SMBLibrary/NTFileStore/INTFileStore.cs
@@ -28,6 +28,10 @@ namespace SMBLibrary
 
         NTStatus FlushFileBuffers(object handle);
 
+        NTStatus LockFile(object handle, long byteOffset, long length, bool exclusiveLock);
+
+        NTStatus UnlockFile(object handle, long byteOffset, long length);
+
         NTStatus QueryDirectory(out List<QueryDirectoryFileInformation> result, object handle, string fileName, FileInformationClass informationClass);
 
         NTStatus GetFileInformation(out FileInformation result, object handle, FileInformationClass informationClass);
diff --git a/SMBLibrary/NTFileStore/NamedPipeStore.cs b/SMBLibrary/NTFileStore/NamedPipeStore.cs
index eef720c..e5052ec 100644
--- a/SMBLibrary/NTFileStore/NamedPipeStore.cs
+++ b/SMBLibrary/NTFileStore/NamedPipeStore.cs
@@ -99,6 +99,16 @@ namespace SMBLibrary
             return NTStatus.STATUS_SUCCESS;
         }
 
+        public NTStatus LockFile(object handle, long byteOffset, long length, bool exclusiveLock)
+        {
+            return NTStatus.STATUS_NOT_SUPPORTED;
+        }
+
+        public NTStatus UnlockFile(object handle, long byteOffset, long length)
+        {
+            return NTStatus.STATUS_NOT_SUPPORTED;
+        }
+
         public NTStatus DeviceIOControl(object handle, uint ctlCode, byte[] input, out byte[] output, int maxOutputLength)
         {
             output = null;
diff --git a/SMBLibrary/Win32/NTFileStore/NTDirectoryFileSystem.cs b/SMBLibrary/Win32/NTFileStore/NTDirectoryFileSystem.cs
index b711019..32af00d 100644
--- a/SMBLibrary/Win32/NTFileStore/NTDirectoryFileSystem.cs
+++ b/SMBLibrary/Win32/NTFileStore/NTDirectoryFileSystem.cs
@@ -110,7 +110,6 @@ namespace SMBLibrary.Win32
 
         public NTDirectoryFileSystem(string path) : this(new DirectoryInfo(path))
         {
-
         }
 
         public NTDirectoryFileSystem(DirectoryInfo directory)
@@ -226,6 +225,16 @@ namespace SMBLibrary.Win32
             return NtFlushBuffersFile((IntPtr)handle, out ioStatusBlock);
         }
 
+        public NTStatus LockFile(object handle, long byteOffset, long length, bool exclusiveLock)
+        {
+            return NTStatus.STATUS_NOT_SUPPORTED;
+        }
+
+        public NTStatus UnlockFile(object handle, long byteOffset, long length)
+        {
+            return NTStatus.STATUS_NOT_SUPPORTED;
+        }
+
         public NTStatus QueryDirectory(out List<QueryDirectoryFileInformation> result, object handle, string fileName, FileInformationClass informationClass)
         {
             IO_STATUS_BLOCK ioStatusBlock;