The session setup to the Windows NT or Windows 2000 Domain Controller %1 from computer %2 using account %4 failed. %2 is ...

The session setup to the Windows NT or Windows 2000 Domain Controller %1 from computer %2 using account %4 failed.  %2 is declared to be a BDC in domain %3. However, %2 tried to connect as either a DC in a trusted domain, a member workstation in domain %3, or as a server in domain %3. Use the Active Directory Users and Computers tool or Server Manager to remove the BDC account for %2.