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ERROR_DS_CANT_FIND_DSA_OBJ
ERROR_DS_CANT_FIND_DSA_OBJ (8419) is an Active Directory Domain Services error. The operation expected a Directory System Agent (DSA) object, typically part of a domain controller topology, but could not find it. This is often associated with stale metadata, incomplete DC promotion/demotion, or a broken configuration-partition reference.
What to check
- Check whether the referenced domain controller is online, promoted, and advertising correctly.
- Inspect the server and NTDS Settings objects in Active Directory Sites and Services.
- Use metadata cleanup only after confirming that the missing DC cannot return and its records are stale.
Useful command
dcdiag /test:Advertising /test:Services /v
Microsoft: DCDiag · Microsoft: Clean up AD DS server metadata · Microsoft: Diagnose AD replication failures
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