Install teredo tunneling pseudo-interface
Jan 18, 2018 · Select Microsoft Teredo Tunneling Adapter, right click and uninstall. Type or paste ‘netsh int ipv6 set teredo client’ into the command window and hit Enter. Go back to Device Manager and select Scan for hardware changes in the top menu. The Microsoft Teredo Tunneling Adapter should now have reappeared and should work fine.