When starting up the game, everything is normal, no freezing and everything works fine. (It didn't auto log me into xbox live because global resources crashed). So I go to sign in, and the game starts to freeze, then my whole pc freezes. And now I can't do anything but hit the power button. 
The second time, I had task manager opened and noticed something, the service host: "Web Account Manager" shoots up to basically 100% cpu usage leaving the other processes useless. Clearly this isn't supposed to happen, as it started to occur in the middle of last year, and didn't happen beforehand.

Now, this issue sometimes doesn't happen, but that is on good days. I'd say 95% of the time when I launch my Minecraft game it freezes my entire computer.
This isn't just limited to me, I've seen other people posting this same issue in other forums, or friends of mine also complaining about this. Please help with this issue, or if it's already been resolved, please link me the resolution.

P.S If I disable the service: Web account Manager, then I won't be able to play any multiplayer.