| Previous | Next |
| ERROR_DS_CANT_DEMOTE_WITH_WRITEABLE_NC | ERROR_DS_INSUFFICIENT_ATTR_TO_CREATE_OBJECT |
ERROR_DS_DUPLICATE_ID_FOUND
The requested object has a non-unique identifier and cannot be retrieved.
ERROR_DS_DUPLICATE_ID_FOUND is Win32 error 8605 (0x0000219D) in Active Directory Domain Services.
Likely impact: Selecting an arbitrary match can update or authorize the wrong directory object.
Typical causes
- duplicate identifiers were introduced by restore or migration.
- conflicting objects exist on different replicas.
- an application reused an external identifier.
- replication has not converged after conflict resolution.
Troubleshooting steps
- Verify that exactly one live object owns the requested identifier.
- Collect identifier value and attribute name and DN, GUID, and replication metadata of every match.
Useful evidence
- Collect originating DC and USN.
- Collect application provisioning history.
Recovery and retry
Identify the authoritative object, repair duplicate values through a controlled migration, and allow replication to converge before lookup resumes.
Related errors
ERROR_DS_NAME_NOT_UNIQUE concerns a requested name; this code identifies a non-unique object identifier used for retrieval
Example
Two migrated users share an application ID. Clearing the value on the obsolete object and verifying replication restores deterministic lookup.
References
Looking for a different code? Search another status or error code.