I am constantly having the same problem with my remote users. We are running 1 Win 2003 SBS and configured the "my documents" from the XP Pro machines to sync with the server. When my remote users come back into the office after a week or so out and try to sync it constantly fails with an "unauthorized or don't have permission" error. If I remove the Offline Files, then it will sync perfectly. My local users sync just fine. Any ideas?