ERROR_CONTROLLING_IEPORT 0x800710E9

Error code 4329 · HRESULT 0x800710E9

WINDOWS

Unable to open or close the inject/eject port.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

ERROR_CONTROLLING_IEPORT is a Windows error code (system error 4329, returned as HRESULT 0x800710E9) reported by Windows. Its official message is: “Unable to open or close the inject/eject port.”

How to fix ERROR_CONTROLLING_IEPORT

  1. Reboot once — many one-off system codes disappear with a clean restart
  2. Repair system files: 'sfc /scannow' then 'DISM /Online /Cleanup-Image /RestoreHealth'
  3. Find the source in Event Viewer → System: filter for this exact code and open its provider link

Related errors

ERROR_TRANSPORT_FULLERROR_UNABLE_TO_EJECT_MOUNTED_MEDIAERROR_UNABLE_TO_INVENTORY_TRANSPORTERROR_PATH_NOT_FOUNDERROR_ACCESS_DENIEDERROR_NOT_ENOUGH_MEMORYERROR_INVALID_DATAERROR_WRITE_PROTECT

Source: Microsoft WinError.h

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