ERROR_NOTIFICATION_GUID_ALREADY_DEFINED 0x80070135

Error code 309 · HRESULT 0x80070135

WINDOWS

The specified file already has a notification GUID associated with it.

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_NOTIFICATION_GUID_ALREADY_DEFINED is a Windows error code (system error 309, returned as HRESULT 0x80070135) reported by Windows. Its official message is: “The specified file already has a notification GUID associated with it.”

How to fix ERROR_NOTIFICATION_GUID_ALREADY_DEFINED

  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_IMAGE_SUBSYSTEM_NOT_PRESENTERROR_INVALID_EXCEPTION_HANDLERERROR_INVALID_LOCK_RANGECBS_E_INSTALLERS_FAILEDCBS_E_STORE_CORRUPTION0x800F09880x800F09500x800F0954

Source: Microsoft WinError.h

Last updated: