I have a Windows 7 PC that the offline files will not synch to a SBS 2003 server. I have done a lot of research and tried many thing but cannot make it work. I've tried the Oplocks registry setting and rebooted the server and also all the Group Policy settings. When I try to synch I get the error 'The process cannot access the file because it is being used by another process' on all the files. I have enabled 'oppotunistic locking' as well. When I try to a manual synch it just says 'Pending' and never completes. Any advice is appreciated.