| Previous | Next |
| STATUS_NTLM_BLOCKED | STATUS_DS_DOMAIN_NAME_EXISTS_IN_FOREST |
STATUS_DS_SRC_SID_EXISTS_IN_FOREST
The source SID is already present in the forest
This status appears in migration or cross-forest identity work when the source SID that would be introduced already exists in the destination forest. The directory blocks the change to preserve SID uniqueness and authorization semantics.
The conflict may involve objectSid, SID history, a previously migrated account, or a restored object. Treat it as an identity-collision investigation before retrying the migration.
What to inspect
- Search the destination forest for the source SID and SID-history values.
- Check previous migrations, failed rollbacks and restored objects.
- Do not strip SID history without confirming the access-control impact.
References
- Microsoft: Active Directory security groups
- Microsoft: Global Catalog
- Microsoft Open Specifications: NTSTATUS values
Looking for a different code? Search another status or error code.