ERROR_SYSTEM_IMAGE_BAD_SIGNATURE 0x8007027D

Error code 637 · HRESULT 0x8007027D

WINDOWS

The system image … is not properly signed. The file has been replaced with the signed file. The system has been shut down.

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_SYSTEM_IMAGE_BAD_SIGNATURE is a Windows error code (system error 637, returned as HRESULT 0x8007027D) reported by Windows. Its official message is: “{Fatal System Error} The system image %s is not properly signed. The file has been replaced with the signed file. The system has been shut down.”

How to fix ERROR_SYSTEM_IMAGE_BAD_SIGNATURE

  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_SYSTEM_SHUTDOWNERROR_SYSTEM_HIVE_TOO_LARGEERROR_SYSTEM_PROCESS_TERMINATEDERROR_SYSTEM_POWERSTATE_TRANSITIONERROR_PNP_RESTART_ENUMERATIONERROR_PNP_REBOOT_REQUIREDERROR_COMMITMENT_MINIMUM

Source: Microsoft WinError.h

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