NTSTATUS 0xC00000E1 (STATUS_DOMAIN_LIMIT

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The server has reached a supported limit for domains or domain-like account stores.

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STATUS_DOMAIN_EXISTS	STATUS_OPLOCK_NOT_GRANTED

STATUS_DOMAIN_LIMIT_EXCEEDED

The domain count exceeds the implementation limit

This is a capacity or product-limit result, not a name collision. It is most relevant to legacy or compatibility account-store implementations that maintain a bounded set of domains. Modern Active Directory scalability limits are documented separately and should not be inferred from this status alone.

Identify the component returning the status and the objects it counts. Deleting arbitrary trust or domain records can break authentication. If the limitation belongs to obsolete software, migration is safer than trying to expand undocumented internal tables.

What to inspect

Record the server version, role, and exact management protocol in use.
Enumerate existing domain and trust objects through supported APIs.
Compare the observed count with the product’s documented limits and upgrade path.

References

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