We're excited to announce that we've fully migrated the Xbox Forums to their new home, here on the Microsoft Community forums!
As of today, going to forums.xbox.com will redirect you here to the Xbox area of the Community forums. We've moved all of your existing threads over so you can continue and start conversations with the new forums experience.
We sincerely appreciate the feedback you have provided over this transition and can't wait for you to check out the new Xbox Forums!
It's happened to me all day yesterday and so far all day today as well. The fact that you can't you can't back out of the loading screen and need to reset limits my attempts at trying, because it's just a hassle.
Get familiar with singleplayer for now. That's what I'm doing.