ERROR_SXS_MANIFEST_MISSING_REQUIRED_DEFAULT_NAMESPACE 0x800736C2

Error code 14018 · HRESULT 0x800736C2

WINDOWS

The manifest is missing the required default namespace specification on the assembly element.

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_MANIFEST_MISSING_REQUIRED_DEFAULT_NAMESPACE is a Windows error code (system error 14018, returned as HRESULT 0x800736C2) reported by Windows. Its official message is: “The manifest is missing the required default namespace specification on the assembly element.”

How to fix ERROR_SXS_MANIFEST_MISSING_REQUIRED_DEFAULT_NAMESPACE

  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_MANIFEST_INVALID_REQUIRED_DEFAULT_NAMESPACEERROR_SXS_MANIFEST_PARSE_ERRORERROR_SXS_MANIFEST_FORMAT_ERRORERROR_SXS_MANIFEST_IDENTITY_SAME_BUT_CONTENTS_DIFFERENTERROR_SXS_INVALID_ASSEMBLY_IDENTITY_ATTRIBUTEERROR_SXS_LEAF_MANIFEST_DEPENDENCY_NOT_INSTALLEDERROR_SXS_PRIVATE_MANIFEST_CROSS_PATH_WITH_REPARSE_POINT

Source: Microsoft WinError.h

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