repadmin /replsummary is the single most useful command for telling you whether AD replication is healthy. One terminal, one keystroke, two columns of numbers that immediately surface every DC that’s…
A lingering object is a deleted AD object that didn’t get the “you’re deleted” memo before the memo itself expired. It sits on a long-disconnected DC, pretending to still be…
An AD object isn’t just a name and some attributes — it’s the attributes plus a per-attribute change diary. That diary, called replication metadata, is what makes inter-DC replication, conflict…
Active Directory replication is the silent plumbing that keeps every domain controller in lockstep — password changes, group memberships, GPO edits, schema updates, every directory write fans out from the…
