I couldn't see the Teredo Adapter in Device Manager or legacy drivers, even if I showed hidden devices. This is the only thing that worked for me.
Run command prompt as admin type in: "netsh interface Teredo set state disable"
Restart your PC, then run the command prompt as admin type in "netsh interface Teredo set state type=default"
I thought it didn't work, but it took a moment after entering in the command after restarting my PC.