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ERROR_DS_CODE_INCONSISTENCY
An internal error has occurred.
ERROR_DS_CODE_INCONSISTENCY is Win32 error 8408 (0x000020D8) and concerns an internal Active Directory code path that reached inconsistent assumptions.
What to verify
Verify whether the directory service components agree on object, schema, database, and operation state. Check Directory Service events preceding the code, server build and recent servicing, and database integrity and replication state.
Likely causes
- an internal invariant was violated.
- mixed component versions or stale state disagreed.
- database metadata is inconsistent.
- a service defect or corruption exposed an impossible path.
Troubleshooting steps
- Collect Directory Service events preceding the code.
- Record server build and recent servicing.
Handling, retry, and recovery
Preserve diagnostics, verify database and replication health, apply supported servicing, and escalate reproducible cases rather than attempting arbitrary object edits.
Related errors
ERROR_DS_DATABASE_ERROR points directly to database access; this code indicates inconsistency in directory-service logic or state
Example
A particular schema operation reproduces only on one unpatched DC. Servicing the server and verifying database integrity removes the inconsistent code path.
References
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