ERROR_ASSERTION_FAILURE 0x8007029C

Error code 668 · HRESULT 0x8007029C

WINDOWS

An assertion failure has occurred.

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_ASSERTION_FAILURE is a Windows error code (system error 668, returned as HRESULT 0x8007029C) reported by Windows. Its official message is: “An assertion failure has occurred.”

How to fix ERROR_ASSERTION_FAILURE

  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_ACPI_ERRORERROR_WOW_ASSERTIONERROR_FILE_SYSTEM_LIMITATION0xC19002000xC1900223STATUS_ACCESS_VIOLATIONSTATUS_IN_PAGE_ERRORSTATUS_ACCESS_DENIED

Source: Microsoft WinError.h

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