What does Windows error code 4329 (ERROR_CONTROLLING_IEPORT) mean?

 
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ERROR_TRANSPORT_FULL ERROR_UNABLE_TO_EJECT_MOUNTED_MEDIA

ERROR_CONTROLLING_IEPORT

The library insert/eject port could not be controlled

Inject and eject workflows depend on the NTMS_IEPORT object. RSM may unlock or extend the port, wait for operator action, retract it and then move media into storage slots. A control failure can arise from a busy port, door interlock, changer fault, unsupported action or hardware that did not reach the requested position.

Check the active inject/eject operation GUID, port state and any library request that owns the port. Verify the library door is closed and no manual operation is in progress. When the device has no programmable port, use the library-door access workflow rather than repeatedly invoking port operations.

What to inspect

  • Read IE-port state and the active operation GUID.
  • Check door interlocks and changer hardware events.
  • Use AccessNtmsLibraryDoor for libraries without a controllable port.

References


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