ERROR_DBG_EXCEPTION_NOT_HANDLED 0x800702B0

Error code 688 · HRESULT 0x800702B0

WINDOWS

Debugger did not handle the exception.

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_DBG_EXCEPTION_NOT_HANDLED is a Windows error code (system error 688, returned as HRESULT 0x800702B0) reported by Windows. Its official message is: “Debugger did not handle the exception.”

How to fix ERROR_DBG_EXCEPTION_NOT_HANDLED

  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_DBG_EXCEPTION_HANDLEDERROR_DBG_REPLY_LATERERROR_DBG_UNABLE_TO_PROVIDE_HANDLEERROR_DBG_TERMINATE_THREADERROR_DLL_MIGHT_BE_INCOMPATIBLEERROR_DLL_MIGHT_BE_INSECUREERROR_REGISTRY_HIVE_RECOVERED

Source: Microsoft WinError.h

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