What does NTSTATUS 0xC01A0025 (STATUS_LOG_CLIENT_NOT_REGISTERED) mean?

 
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STATUS_LOG_CLIENT_ALREADY_REGISTERED STATUS_LOG_FULL_HANDLER_IN_PROGRESS

STATUS_LOG_CLIENT_NOT_REGISTERED

STATUS_LOG_CLIENT_NOT_REGISTERED identifies a missing managed-client relationship on the stream. Operations that ask CLFS management to make space or coordinate tail movement require the client registration established for that specific stream and lifecycle.

It is not a generic authentication failure. A valid log handle can still be insufficient if the caller is using a management API without the corresponding managed-client state.

What to inspect

  • Verify that registration completed successfully on the same stream and has not been unregistered or invalidated during shutdown.
  • Pass the managed-client object returned by the registration path, not a reconstructed or stale identity.
  • Separate missing registration from STATUS_LOG_CLIENT_ALREADY_REGISTERED; they require opposite lifecycle corrections.

References


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