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Steps to perform an authoritative restore of DFSR SYSVOL (like "D4" for FRS)

Once authoritative restore gets completed successfully, then you should initiate nonauthoritative restore of DFSR Sysvol on other ADC servers one by one.

Then you should initiate DFSR Sysvol authoritative restore on PDC.

Disable DFSR Sysvol replication on all DCs including PDC master server.

This restore should be done on primary domain control (PDC) master server because the PDC is the server where the most recent Sysvol data resides. If your DFSR replicated Sysvol is not replicating on any domain controller in an entire domain, it's broken and got corrupted on all domain controllers (very rare situation), in that case, you need DFSR Sysvol authoritative restore. There are TWO types of DFSR Sysvol restores are available: Hence I have set up a test lab and tried various sequences and found the correct sequence.įrom Windows 2008 Domain Controllers and above domain functional levels, you can have the Active Directory Sysvol replicated with DFSR that is more robust and reliable than FRS replication technology.

This can lead to confusion, misunderstanding and even doing it wrong. However, the Microsoft article is not clear when to stop and start the DFSR service and on which server. I have seen many Active Directory Distributed File System Replication (DFSR) Sysvol restoration articles, but most of the articles do not mention correct sequence \ restoration steps, especially for DFSR Sysvol Authoritative Restore.

In that case, you need to restore \ refresh Sysvol folder contents authoritatively \ non authoritatively depending upon the situation.

You might see event ID 4012 event ID on a domain controller in DFSR event logs. However sometimes due to DNS problems, replication latencies, network problems, Sysvol might stop replicating on a specific domain controller.

The major benefit is, DFSR has a self-healing system for problems like database corruption or journal wraps. It has number of benefits over conventional FRS Sysvol. Active Directory DFSR Sysvol is very robust Sysvol replication engine.