ERROR_MUI_INVALID_FILE 0x80073AFD

Error code 15101 · HRESULT 0x80073AFD

WINDOWS

The resource loader failed to load MUI file because the file fail to pass validation.

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_MUI_INVALID_FILE is a Windows error code (system error 15101, returned as HRESULT 0x80073AFD) reported by Windows. Its official message is: “The resource loader failed to load MUI file because the file fail to pass validation.”

How to fix ERROR_MUI_INVALID_FILE

  1. Verify the path/file actually exists and is not blocked by antivirus quarantine
  2. Reinstall the application that raised the error to restore missing files
  3. Check the full path spelling (long paths >260 chars need a registry opt-in)
  4. Run the Windows Update troubleshooter (Settings → System → Troubleshoot → Other tools)
  5. Reset update components: stop 'wuauserv' and 'bits', clear C:\Windows\SoftwareDistribution, restart both services
  6. Verify system file integrity with 'sfc /scannow'

Related errors

ERROR_MUI_INVALID_RC_CONFIGERROR_MUI_INVALID_LOCALE_NAMEERROR_MUI_INVALID_ULTIMATEFALLBACK_NAMEERROR_MUI_FILE_NOT_FOUNDERROR_MUI_FILE_NOT_LOADEDERROR_RESOURCE_ENUM_USER_STOPERROR_MUI_INTLSETTINGS_UILANG_NOT_INSTALLED

Source: Microsoft WinError.h

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