ERROR_DS_MASTERDSA_REQUIRED 0x8007207A

Error code 8314 · HRESULT 0x8007207A

WINDOWS

The operation must be performed at a master DSA.

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_MASTERDSA_REQUIRED is a Windows error code (system error 8314, returned as HRESULT 0x8007207A) reported by Windows. Its official message is: “The operation must be performed at a master DSA.”

How to fix ERROR_DS_MASTERDSA_REQUIRED

  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_BAD_INSTANCE_TYPEERROR_DS_OBJECT_CLASS_REQUIREDERROR_DS_MISSING_REQUIRED_ATTERROR_DS_OBJ_TOO_LARGEERROR_DS_ILLEGAL_MOD_OPERATIONERROR_DS_ATT_NOT_DEF_FOR_CLASSERROR_DS_ATT_IS_NOT_ON_OBJ

Source: Microsoft WinError.h

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