ERROR_DS_SINGLE_VALUE_CONSTRAINT 0x80072081

Error code 8321 · HRESULT 0x80072081

WINDOWS

Multiple values were specified for an attribute that can have only one value.

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_SINGLE_VALUE_CONSTRAINT is a Windows error code (system error 8321, returned as HRESULT 0x80072081) reported by Windows. Its official message is: “Multiple values were specified for an attribute that can have only one value.”

How to fix ERROR_DS_SINGLE_VALUE_CONSTRAINT

  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_SINGLE_USER_MODE_FAILEDERROR_DS_CANT_ADD_ATT_VALUESERROR_DS_RANGE_CONSTRAINTERROR_DS_ATT_VAL_ALREADY_EXISTSERROR_DS_ATT_ALREADY_EXISTSERROR_DS_CANT_REM_MISSING_ATTERROR_DS_ATT_NOT_DEF_FOR_CLASS

Source: Microsoft WinError.h

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