Help! Our PDC cannot see our domain, complete network failure.
Right, following on from my post yesterday, this is our current situation.
Our domain is completely non-operational.
DC1 - Primary Domain Controller
Our primary domain controller cannot see our domain, any attempt to access server MMCs informs us that our domain is not available or the PDC cannot be reached.
dcpromo tells us that it IS a domain controller and the only option it gives us is to delete the domain, which we obviously don't want to do!
I've attached the dcdiag output from DC1 - dcdiag-1.txt.
DC2 - Secondary Domain Controller
Our secondary domain controller cannot see the domain either. It has been recently demoted and promoted using dcpromo to solve a GPO issue. The problems with DC1 started shortly after that. We believe that was due to replication. The netlogon and sysvol folders we not replicating between the two DCs so, using a Microsoft suggestion, we forced that to happen using a registry edit. The "burflags" key was changed to D4 on the PDC, DC1 and D2 on the secondary DC, DC2.
We did a system state restore yesterday and completely restored the PDC C: drive from a week old backup this morning, but the Domain is still unavailable.
Anyone got any ideas? Let us know if you need any more information from us.