diff --git a/source/java/org/alfresco/filesys/smb/server/repo/ContentDiskDriver.java b/source/java/org/alfresco/filesys/smb/server/repo/ContentDiskDriver.java
index f9d87c1849..9761b7ac87 100644
--- a/source/java/org/alfresco/filesys/smb/server/repo/ContentDiskDriver.java
+++ b/source/java/org/alfresco/filesys/smb/server/repo/ContentDiskDriver.java
@@ -331,7 +331,8 @@ public class ContentDiskDriver implements DiskInterface, IOCtlInterface
                 {
                     logger.warn("Failed to rollback transaction", ex);
                 }
-            }                
+            }
+            authComponent.clearCurrentSecurityContext();
         }
 
         // Check if the client side drag and drop appliction has been enabled