Windows error 8458 (ERROR_DS_DRA_NAME

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The replication operation encountered a collision of object names.

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ERROR_DS_DRA_SINK_DISABLED	ERROR_DS_DRA_SOURCE_REINSTALLED

ERROR_DS_DRA_NAME_COLLISION

ERROR_DS_DRA_NAME_COLLISION (8458) is an Active Directory replication error. Two directory objects or histories conflict in a way that prevents Active Directory from safely applying the replicated change. The correct remediation depends on object GUIDs and metadata, not only on the visible name.

What to check

Record the object DN and GUIDs from the Directory Service log, then compare replication metadata on source and destination.
Check whether the conflict followed restore, cloning, reanimation, or a delayed replication partner returning to service.
Do not resolve the conflict by manually deleting the first object you find; identify the authoritative object and dependencies first.

Useful command

repadmin /showobjmeta <DestinationDC> "<DistinguishedName>"

Microsoft: Diagnose AD replication failures · Microsoft: Lingering objects in an AD DS forest · Microsoft: Repadmin /showrepl

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