A client's SBS 2003 server keeps disconnecting users. They complain that they loose their desktop icons. They can login and open outlook (Exchange) and see their inbox but can't send/recieve email so sounds like they are being disconnected from Active Directory.
They can still get to the Internet and login to the domain uisng the domain users account login. I have checked the logs and I can't see anyting that might explain it but don't really know what to look for.
Logging in/out or rebooting workstations seems to work most of the time but sometimes doesn't.
They have GPO redirecting their documents to a folder on the server and a logon bat file assigning a network drive. There are also assigned applications.
What can I do to find out what is causing the issue?