ERROR_SXS_INVALID_ASSEMBLY_IDENTITY_ATTRIBUTE_NAME 0x80073700

Error code 14080 · HRESULT 0x80073700

WINDOWS

The supplied assembly identity has one or more attribute names that contain characters not permitted in XML names.

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_INVALID_ASSEMBLY_IDENTITY_ATTRIBUTE_NAME is a Windows error code (system error 14080, returned as HRESULT 0x80073700) reported by Windows. Its official message is: “The supplied assembly identity has one or more attribute names that contain characters not permitted in XML names.”

How to fix ERROR_SXS_INVALID_ASSEMBLY_IDENTITY_ATTRIBUTE_NAME

  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_INVALID_ASSEMBLY_IDENTITY_ATTRIBUTEERROR_SXS_INVALID_DEACTIVATIONERROR_SXS_INVALID_IDENTITY_ATTRIBUTE_VALUEERROR_SXS_INVALID_IDENTITY_ATTRIBUTE_NAMEERROR_SXS_MISSING_ASSEMBLY_IDENTITY_ATTRIBUTEERROR_SXS_ASSEMBLY_MISSINGERROR_SXS_PROTECTION_CATALOG_FILE_MISSING

Source: Microsoft WinError.h

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