We are small business intelligence company and we have a head office and a branch office. I have active directory running on windows 2012 R2 in the head office and another active directory running on windows 2012 in brnach office. Both offices are connected via site to site VPN.
When ever there is connectivity issues between two office or the PDC is down, the seconday AD server goes down as well. It is not configured as a RODC. when I try to check the domain settings under domains and trusts, I get the error
You cannot modify domain or trust information because a Primary Domain Controller (PDC) emulator cannot be contacted. Please verify that the PDC emulator for the current domain and the network are both online and functioning properly.
Users are unable to authenticate and when I try to access users and computers I get the following error below.
Naming information cannot be located because: The specified doamin either does not exist or could not be contacted. Contact your system administrator to verify that your doamin is properly configured and is currently online.
I see both the Domain Controllers are set as GC Servers. I am not an expert in active directory. I am hoping it is a minor issue some one should be able to help me fix it.