We have been in the process of upgrading from NT to Active Directory. Here is the basic rundown of how that was accomplished:
1. Promote BDC to PDC
2. Upgrade new PDC to Windows 2000 Server
Last night I flipped the switch and shutdown all NT Domain Controllers, just leaving the one Active Directory Domain Controller running. Made sure they I could log into my W2K Pro machine, and assumed everything was fine.
Come in to the office this morning and all hell is breaking loose. People either can't login to their Win98 machines or the 2000 Pro users cannot get into their email (exchange). I turned the NT BDC back on and everything was fine.
Did I miss something in this upgrade? The new 2000 DC is running DNS, WINS & DHCP and everything is configured properly. I can ping and perform lookups agains the DC from the workstations having issues. Any ideas? Would these machines still be trying to find the NT DC?