We have a SBS 2003 that does nothing more than some admin shares and active directory. Our network also consists of 2 other Windows 2008 R2 Active Directory Server with various file server and sql virtual server.
Everything works great until we shutdown the SBS 2003 server. When the server is powered off users cannot authenticate to the domain.
I have tried to transfer the pdc, rid and infrastructure roles to one of the other domain controllers but the same thing happens.
We would like to decommission the SBS 2003 server but haven't done so because of the authentication problem.