ERROR_ABIOS_ERROR 0x8007021A

Error code 538 · HRESULT 0x8007021A

WINDOWS

An error occurred in the ABIOS subsystem.

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_ABIOS_ERROR is a Windows error code (system error 538, returned as HRESULT 0x8007021A) reported by Windows. Its official message is: “An error occurred in the ABIOS subsystem.”

How to fix ERROR_ABIOS_ERROR

  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_VERIFIER_STOPERROR_WX86_WARNINGERROR_PIPE_LISTENINGCBS_E_INSTALLERS_FAILEDCBS_E_STORE_CORRUPTION0x800F09880x800F09500x800F0954

Source: Microsoft WinError.h

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