I cannot say if this issue has happened before cause we are mapping users machines more now to network drives pointing to Alfresco share. I don't know if this incident is related to native CIFS or not. I have read many articles but don't have an answer yet. Alfresco seems to work fine. When I create a bat file for a user to map to a Alfresco network share folder I would get a system 53 error. When I manually map the drive (knowing the path is correct) I get an error message "specified network name is no longer available. (\\servername\alfresco\sites) When I remove sites it maps to the drive, but when I open the site folder…..its empty. This my top priority to get this working again.