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ERROR_DS_DRA_REF_NOT_FOUND
ERROR_DS_DRA_REF_NOT_FOUND (8449) is an Active Directory replication error. The operation expected replication-reference information that is absent. This commonly follows incomplete topology changes, removed domain controllers, or a naming-context configuration that no longer matches the partner.
What to check
- Check the expected server and connection objects in the replication topology.
- Verify that the referenced domain controller was not demoted, restored, or renamed without completing supported cleanup.
- Compare configuration-partition replication on another healthy domain controller before attempting to recreate references.
Useful command
repadmin /showconn <DestinationDC>Microsoft: Diagnose AD replication failures · Microsoft: Repadmin /showrepl · Microsoft: Troubleshoot AD replication problems
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