After power returned on August 14, 2026, both PVE domain controllers started, hostnames resolved, and some IPv4/IPv6 probes passed. Yet DC1’s latest attempt to pull Schema from DC2 showed error 8524.

Requesting DNS registration on DC2, restarting Netlogon, correcting remote command wrapping, and retrying the specific replication relationship restored it. When reviewing the record on September 15, the key correction was that recovery does not prove which original DNS record was missing.