As title says, can't do much and can't get into games. It was working just fine last night, I checked my update history and I have one update from yesterday (don't remember if it was during the day or before I went to sleep though... but I mention them anyway because I believe that's the only thing that changed so far)

These updates are:
KB4528760 & KB2267602

This is how the launcher looks:

Already tried deleting cache, nothing happened other than now I'm not logged into my account (and can't log in either).
Solved. Had to delete "pager" folder in Documents.