Windows 10 Xbox Live - "Teredo is unable to qualify" FIX [MAY 2022]
REG add "HKLM\SYSTEM\CurrentControlSet\services\WinHttpAutoProxySvc" /v Start /t REG_DWORD /d 3 /f
netsh interface Teredo set state type=client
(if doesn't work, try: netsh interface teredo set state type=enterpriseclient)
netsh interface Teredo show state