Primary Domain Controller suddenly stops replication and sits in isolated mode

Question

My Primary Domain Controller suddenly stops replication and sits in isolated mode , DNS resolution not working but other Domain controller working fine .

Answer 1

Hello,

Thank you for posting in Q&A forum.

Are there any relevant error messages? I suggest you use tools such as Repadmin to monitor and solve replication problems. For details, I recommend you refer to the following links:

https://learn.microsoft.com/en-us/troubleshoot/windows-server/active-directory/diagnose-replication-failures?source=recommendations

https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/manage/troubleshoot/troubleshooting-active-directory-replication-problems

I hope the information above is helpful.

Best regards

Zunhui

============================================

If the Answer is helpful, please click "Accept Answer" and upvote it.