Error Authorizing User error?

Hi,
I’m getting the above error when I’m trying to log into halo 5, not seen this before and other games work fine.
I’ve tried restarting the game, Xbox and router, any ideas?
I’m from the UK (south coast) if it helps?

Getting the same error…

Same cant get a game, servers must be having a crap attack again. This happens waaay too often.

Yeah, I’m getting this now. This is turning out to be a fun day off :(.