Forum Discussion
Replacing a 2012r2 DC with a 2022 DC
Hi, I have a DC running on 2012r2 (where FSMO resides) and also on 2016 as a backup (2012 schema of course). I’m planning on demoting the 2012r2 DC and promoting a 2022 DC in its place. The new s...
Demote DC2012 and turn it off.
At this step I'd check the health is 100% (dcdiag, repamin tools) and perform cleanup if needed.
https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/ad-ds-metadata-cleanup
https://techcommunity.microsoft.com/t5/itops-talk-blog/step-by-step-manually-removing-a-domain-controller-server/ba-p/280564
also clean up DNS records of demoted server.
