I have a problem with keeping Windows XP workstations attached to our Windows Server 2003 R2 domain controller ever since our ISP changed along with the main office router. All our WinXP client workstations cannot see the domain even though the computer names appear in the Domain Controllers computers list. The problem is temporarily resolved by rebooting both the PDC and workstations, but after an hour or so the workstations can't see the domain. No problem pinging anything, just can't find the domain when looking for locations to add users to groups in WinXP system management. Also shared resources between the domain workstations start to require user authentication to access.
I read that enabling WINS was a recommended best practice in a mixed mode environment. I was just wondering if - in cases like mine - enabling WINS protocol would be helpful.