ERROR_DS_ATT_NOT_DEF_FOR_CLASS 0x8007207D

Error code 8317 · HRESULT 0x8007207D

WINDOWS

An attempt was made to modify an object to include an attribute that is not legal for its class.

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_DS_ATT_NOT_DEF_FOR_CLASS is a Windows error code (system error 8317, returned as HRESULT 0x8007207D) reported by Windows. Its official message is: “An attempt was made to modify an object to include an attribute that is not legal for its class.”

How to fix ERROR_DS_ATT_NOT_DEF_FOR_CLASS

  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_DS_ATT_NOT_DEF_IN_SCHEMAERROR_DS_ATT_ALREADY_EXISTSERROR_DS_ATT_VAL_ALREADY_EXISTSERROR_DS_ATT_IS_NOT_ON_OBJERROR_DS_MISSING_REQUIRED_ATTERROR_DS_OBJECT_CLASS_REQUIREDERROR_DS_MASTERDSA_REQUIRED

Source: Microsoft WinError.h

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