Forum Discussion
Clarification Regarding msDFSR-Options After Authoritative SYSVOL Synchronization
Hello,
I had a SYSVOL synchronization issue between my domain controllers, so I had to perform an authoritative synchronization of DFSR-replicated SYSVOL.
The procedure starts by setting msDFSR-Options=1 on the healthy domain controller. However, after completing the procedure and returning the other DFSR-related values on all domain controllers to their default settings, I could not find any clear information about whether msDFSR-Options should also be returned to its default value.
Could you please clarify the following points?
- Should msDFSR-Options=1 remain configured on DC01 after the authoritative synchronization has been successfully completed, or should the attribute be returned to its default/not-set value?
- Does keeping msDFSR-Options=1 mean that DC01 will remain the authoritative/source domain controller for future SYSVOL replication?
- If we later migrate our domain controllers to new servers running Windows Server 2022 or Windows Server 2025, do we need to configure msDFSR-Options=1 on one of the new domain controllers?
- Or is msDFSR-Options=1 only required temporarily when performing an authoritative SYSVOL synchronization?
Thank you in advance for your clarification.
Hello MasPAN74 ,
msDFSR-Options=1 is a temporary flag used solely to enforce authoritative replication and must be manually reset to its default value (0 or unset) once the operation is complete. If left in place permanently, it will permanently lock this DC into the ‘source’ role and lead to abnormal replication behaviour.
The value ‘msDFSR-Options=1’ means ‘mark this member as the authoritative source’ and forces all other members to retrieve the SYSVOL content from this DC. This is intended solely as a temporary remedial measure in a recovery scenario where SYSVOL data is inconsistent.
If the solution helped, would you mark it as solved?
5 Replies
Hello MasPAN74 ,
msDFSR-Options=1 is a temporary flag used solely to enforce authoritative replication and must be manually reset to its default value (0 or unset) once the operation is complete. If left in place permanently, it will permanently lock this DC into the ‘source’ role and lead to abnormal replication behaviour.
The value ‘msDFSR-Options=1’ means ‘mark this member as the authoritative source’ and forces all other members to retrieve the SYSVOL content from this DC. This is intended solely as a temporary remedial measure in a recovery scenario where SYSVOL data is inconsistent.
If the solution helped, would you mark it as solved?
If the solution helped, would you mark it as solved?
After check i found that the value was set automatically to 0 on DC01
