ERROR_SXS_ASSEMBLY_NOT_FOUND 0x800736B3

Error code 14003 · HRESULT 0x800736B3

WINDOWS

The referenced assembly is not installed on your system.

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_ASSEMBLY_NOT_FOUND is a Windows error code (system error 14003, returned as HRESULT 0x800736B3) reported by Windows. Its official message is: “The referenced assembly is not installed on your system.”

How to fix ERROR_SXS_ASSEMBLY_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_ASSEMBLY_NOT_LOCKEDERROR_SXS_ASSEMBLY_MISSINGERROR_SXS_ASSEMBLY_IS_NOT_A_DEPLOYMENTERROR_SXS_CANT_GEN_ACTCTXERROR_SXS_INVALID_ACTCTXDATA_FORMATERROR_SXS_MANIFEST_FORMAT_ERRORERROR_SXS_MANIFEST_PARSE_ERROR

Source: Microsoft WinError.h

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