If you've registered to preview Xbox One updates but still get a “Group Not Found” error when you try to access the private Xbox One Early Access forum, your registration probably hasn't been processed yet. Once it goes through, you should receive access
to the private Xbox Early Access forum within two working days.
If you can't visit any of the forums, make sure that you're signing in at Xbox Forums using the Microsoft account that's associated with your gamertag. If you're signed in but still have trouble accessing any of the forums, please contact us on Twitter at
@XboxSupport for help.