How to Fix USN roll back issue on single dc.

azmatshaikh used Ask the Experts™
I have a dc running windows 2008. How to fix usn roll back issue on single dc.
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Technical Lead
Top Expert 2011
To get a single domain controller out of USN Rollback:

Open Regedit
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NTDS\Parameters
Locate the key “Dsa Not Writable”=dword:00000004
Delete the entire key
Enable replication by running repadmin /options servername -DISABLE_OUTBOUND_REPL and repadmin /options servername -DISABLE_INBOUND_REPL

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