Hello all - hope someone can help me with this.
Small office had Server2003R2 with 7 XP SP3 machines with domain. Added a Server2008R2, dcpromo, added Roles for DHCP, DNS, AD. FSMO shows the roles all to the new Server2008R2 machine. Tried to dcpromo to demote the Server2003R2 box, but error "the operation failed because a domain controller could not be contacted for domain that contains an account for this computer". DNS shows pointer records for both DC's. Not sure why this is giving the error.
ALSO (and a bigger problem since I can live with the Server2003 box being an addition DC right now), they're running an application in this office that has a client install on the XP machines, but the data resides on the server (chiropractor software). It worked fine in Server2003, but it is severely slow now on the XP machines (for instance, clicking on a client in the software would bring up their information/history dialog box in no time flat on Server2003, but now you wait sometimes 1-2 minutes!).
I've done some searching on this issue, and saw some info regarding SMB2.0 causing issues, so I've disabled it on the server in the registry - to no avail. Anyone have any other ideas????????? Thanks in advance!