Same problem. Irritating!!! I have limited time to play and this cuts into it big time. Got kicked of this morning for "maintenance" then can't get on when I get home from work. Sh**!
XBox Live site is reporting all services as Normal for now, but even the status page is very slow to load. It looks like they are having a problem from this end.
Xbox One - EU - EP/DC
Trying and failing to hold the walls of his Templar house up since 2015