4933 Synchronization of a replica of an Active Directory naming context has ended
Written when replica synchronization of an Active Directory naming context ends. Paired with the start 4932, it captures the completion and outcome of a synchronization cycle.
Overview
The subcategory is Audit Directory Service Replication. It is generated when replica synchronization ends, with success (S) and failure (F) variants. A failure can be a sign of a replication fault.
How it is triggered
- The completion of a replication synchronization cycle between DCs.
Security review points
- If synchronization failures persist, consider a communication fault between DCs or operations disrupting replication. Check it from the angle of availability and directory consistency.
- Paired with the start 4932, view synchronization duration and outcome. Evaluate health together with topology changes 4928 to 4931.
Notes for log review
- In normal operation it appears in volume as successes. What is notable is persistent failures (F) or a skew toward a specific DC.
- Use it as primary material for replication-fault investigation.
Key fields
| Field | Meaning |
|---|---|
| Source/destination DC | The parties to the synchronization |
Naming Context | The partition synchronized |
| Result code | The outcome of the synchronization |