ERROR_MEMBER_IN_ALIAS 0x80070562

Error code 1378 · HRESULT 0x80070562

WINDOWS

The specified account name is already a member of the group.

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_MEMBER_IN_ALIAS is a Windows error code (system error 1378, returned as HRESULT 0x80070562) reported by Windows. Its official message is: “The specified account name is already a member of the group.”

How to fix ERROR_MEMBER_IN_ALIAS

  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_MEMBER_IN_GROUPERROR_MEMBER_NOT_IN_ALIASERROR_MEMBER_NOT_IN_GROUPERROR_ALIAS_EXISTSERROR_NO_SUCH_ALIASERROR_LOGON_NOT_GRANTED

Source: Microsoft WinError.h

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