What does Windows error code 8443 (ERROR_DS_DRA_INCONSISTENT_DIT) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: Replication detected an inconsistency in the Active Directory database tree.

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ERROR_DS_DRA_INTERNAL_ERROR	ERROR_DS_DRA_CONNECTION_FAILED

ERROR_DS_DRA_INCONSISTENT_DIT

ERROR_DS_DRA_INCONSISTENT_DIT (8443) is an Active Directory replication error. The directory information tree (DIT) contains state that cannot be reconciled safely by the current replication operation. This is a data-consistency signal, not a reason to force synchronization repeatedly.

What to check

Capture the affected naming context, partner pair, and Directory Service events before attempting any cleanup.
Check for related database, storage, restore, virtualization, or lingering-object events on the same controller.
Use a supported recovery or domain-controller remediation plan; do not perform unsupported direct edits to the AD database.

Useful command

repadmin /showrepl <DestinationDC> /all /verbose

Microsoft: Diagnose AD replication failures · Microsoft: Troubleshoot stale replication partners · Microsoft: Troubleshoot AD replication problems

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