ERROR_INVALID_FLAG_NUMBER 0x800700BA

Error code 186 · HRESULT 0x800700BA

WINDOWS

The flag passed is not correct.

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_INVALID_FLAG_NUMBER is a Windows error code (system error 186, returned as HRESULT 0x800700BA) reported by Windows. Its official message is: “The flag passed is not correct.”

How to fix ERROR_INVALID_FLAG_NUMBER

  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_SEM_NOT_FOUNDERROR_INVALID_STARTING_CODESEGERROR_ALREADY_EXISTSWU_E_NOT_APPLICABLEWU_E_PT_WINHTTP_NAME_NOT_RESOLVEDWU_E_PT_HTTP_STATUS_SERVICE_UNAVAILWU_E_PT_HTTP_STATUS_FORBIDDENWU_E_UH_INSTALLERFAILURE

Source: Microsoft WinError.h

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