ERROR_MRM_UNKNOWN_QUALIFIER 0x80073B09

Error code 15113 · HRESULT 0x80073B09

WINDOWS

Unknown qualifier.

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_MRM_UNKNOWN_QUALIFIER is a Windows error code (system error 15113, returned as HRESULT 0x80073B09) reported by Windows. Its official message is: “Unknown qualifier.”

How to fix ERROR_MRM_UNKNOWN_QUALIFIER

  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_MRM_INVALID_FILE_TYPEERROR_MRM_INVALID_QUALIFIER_VALUEERROR_MRM_INVALID_PRICONFIGERROR_MRM_NO_CANDIDATEERROR_MRM_RUNTIME_NO_DEFAULT_OR_NEUTRAL_RESOURCEERROR_MRM_NO_MATCH_OR_DEFAULT_CANDIDATEERROR_MRM_RESOURCE_TYPE_MISMATCH

Source: Microsoft WinError.h

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