Recently migrated our domain to 2016 AD from 2012 R2. Promoted the new DC’s, Demoted
the old and everything
Ran some dcdiag and repadmin commands and everything comes back clean. Verified all
the DC’s are replicating.
The only issue is that the last DC I demoted is still showing in AD Sites and Services with a file
named MSdns-serversettings showing underneath it. I’ve deleted old DC’s from S&S before,
but I cant remember seeing this file before. Is it safe to delete?
It may be worth opening Task Manager, clicking the Details tab, then sorting it by the Memory column or Commit size (see link) and leaving it on (don’t minimise it and don’t log off, just lock it). When you manage to log on to the server when it is slow you should see the offending process at the top of the list.
Have you seen this