ERROR_SXS_KEY_NOT_FOUND 0x800736B7

Error code 14007 · HRESULT 0x800736B7

WINDOWS

The requested lookup key was not found in any active activation context.

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_SXS_KEY_NOT_FOUND is a Windows error code (system error 14007, returned as HRESULT 0x800736B7) reported by Windows. Its official message is: “The requested lookup key was not found in any active activation context.”

How to fix ERROR_SXS_KEY_NOT_FOUND

  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_SXS_CANT_GEN_ACTCTXERROR_SXS_COMPONENT_STORE_CORRUPTERROR_SXS_ACTIVATION_CONTEXT_DISABLEDERROR_SXS_VERSION_CONFLICTERROR_SXS_MANIFEST_PARSE_ERRORERROR_SXS_WRONG_SECTION_TYPEERROR_SXS_MANIFEST_FORMAT_ERROR

Source: Microsoft WinError.h

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