I have 3 branches.
Each branch has 2 DCs.
Up until a few days ago they were all running Server 2003.
I upgraded 2 DCs to Server 2008 R2.
On the 2 servers that are running Server 2008 R2, I'm unable to open the Group Policy Management Console.
I get the following error message:
"The specified domain controller could not be contacted. This affects all sites in the console for the following forest.
The error was:
The specified domain controller either does not exist or could not be contacted."
The are some options at the bottom -
- Choose a different domain controller
- Remove all sites in this forest from the console
Can anyone tell me why this is happening?
I demoted the 2 DCs before I reinstalled the Operating System. The server names and IP addresses didn't change. I can remotely access the servers, etc and everything appears to be operational except for this issue (although there may be more issues I'm unaware of).
Any help would be appreciated.