What does Windows error code 8361 (ERROR_DS_OBJ_GUID_EXISTS) mean?

 
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ERROR_DS_INVALID_DMD ERROR_DS_NOT_ON_BACKLINK

ERROR_DS_OBJ_GUID_EXISTS

The objectGUID collides with an existing live or deleted identity

Active Directory assigns objectGUID when an object is created and treats the value as stable, read-only identity thereafter. MS-ADTS permits a requester-specified GUID on Add only under narrow conditions, including a heuristic, a control access right, a non-NULL GUID, and forest-wide nonuse. A duplicate GUID is therefore an identity collision, not a naming collision.

Search by objectGUID and include deleted-object state where appropriate. A renamed object keeps its GUID, and a deleted representation can still matter to local directory state. Generating a different DN does not solve a GUID collision. If the caller is a restore, migration, or replication-related tool, verify why it is attempting to preserve or inject object identity.

What to inspect

  • Capture the exact GUID in binary or canonical dashed form.
  • Locate any live or deleted object associated with that GUID.
  • Determine whether the client should be specifying objectGUID at all.

References


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