We have been facing the below issue for a long:
We have two Windows Server 2012 DCs. Both the DCs stopped replicating for a long time and the time exceeds more than 3 years.
I installed/promoted another DC and followed all the steps to replicate with the 1st one but when I create a user in any of the DCs, I need to refresh, and then I can see the change. Both the DCs do not replicate automatically. I did not demote the second faulty DC.
The second issue is when I shut down the first domain, our employees cannot access shared folders and the internet.
All our roles are in our first DC.
Domain Name Master
RID Pool Manager
What could be the possible solution? Please provide me as soon as possible because we do not have any redundant DC and our first DC is on a virtual machine and that server is creating some problem and can go down anytime.