ERROR_DS_DS_REQUIRED 0x8007211E

Error code 8478 · HRESULT 0x8007211E

WINDOWS

The requested operation requires a directory service, and none was available.

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_DS_REQUIRED is a Windows error code (system error 8478, returned as HRESULT 0x8007211E) reported by Windows. Its official message is: “The requested operation requires a directory service, and none was available.”

How to fix ERROR_DS_DS_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_DRA_REPL_PENDINGERROR_DS_INVALID_LDAP_DISPLAY_NAMEERROR_DS_NON_BASE_SEARCHERROR_DS_WRONG_OM_OBJ_CLASSERROR_DS_CONSTRUCTED_ATT_MODERROR_DS_CANT_RETRIEVE_ATTSERROR_DS_NAME_ERROR_NO_SYNTACTICAL_MAPPING

Source: Microsoft WinError.h

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