DCDIAG reported a DC had exceeded its replication tombstone. We attempted to gracefully remove AD using DCPROMO with no luck. So we disconnected it from the network, ran /forceremoval (worked), then went into AD to remove the remnants. Took it out of ADS&S no problem, removed all DNS records no problem, but attempted to remove it from the Domain Controllers container in ADUC and got a pop-up that said:
Windows cannot delete object [server name] because:
Directory Object not found
Do I need to use ADSIUTIL now to manually clean this up? The server is permanently offline.