diff --git a/src/WINNT/afsrdr/kernel/fs/AFSFastIoSupport.cpp b/src/WINNT/afsrdr/kernel/fs/AFSFastIoSupport.cpp
index 6ea12117a3..8f9ccac81f 100644
--- a/src/WINNT/afsrdr/kernel/fs/AFSFastIoSupport.cpp
+++ b/src/WINNT/afsrdr/kernel/fs/AFSFastIoSupport.cpp
@@ -264,6 +264,15 @@ AFSFastIoAcquireFile( IN struct _FILE_OBJECT *FileObject)
 
     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
                   AFS_TRACE_LEVEL_VERBOSE,
+		  "AFSFastIoAcquireFile Acquiring Fcb lock %p EXCL %08lX\n",
+		  &pFcb->NPFcb->Resource,
+		  PsGetCurrentThread()));
+
+    AFSAcquireExcl( &pFcb->NPFcb->Resource,
+		    TRUE);
+
+    AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
+		  AFS_TRACE_LEVEL_VERBOSE,
                   "AFSFastIoAcquireFile Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
                   &pFcb->NPFcb->SectionObjectResource,
                   PsGetCurrentThread()));
@@ -293,6 +302,17 @@ AFSFastIoReleaseFile( IN struct _FILE_OBJECT *FileObject)
 
     AFSFcb *pFcb = (AFSFcb *)FileObject->FsContext;
 
+    if( ExIsResourceAcquiredExclusiveLite( &pFcb->NPFcb->Resource))
+    {
+	AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
+		      AFS_TRACE_LEVEL_VERBOSE,
+		      "AFSFastIoReleaseFile Releasing Fcb Lock %p EXCL %08lX\n",
+		      &pFcb->NPFcb->Resource,
+		      PsGetCurrentThread()));
+
+	AFSReleaseResource( &pFcb->NPFcb->Resource);
+    }
+
     if( ExIsResourceAcquiredExclusiveLite( &pFcb->NPFcb->SectionObjectResource))
     {
 	PFILE_OBJECT fileObject = pFcb->Specific.File.SectionCreateFO;