Game closing when clicking "Find Multiplayer Game".

[Erppa112]

Hey, so i cannot really play multiplayer, because of that when i go to browse multiplayer games about 2-5 seconds after i click "Find Multiplayer Game" my game closes,
even if i go to the old server browser through the console, the same thing happens.

The game does not crash or anything it just closes the same way like i pressed "Quit".

And i don't know if this is a bug or anything because i did verify the game files and tried again but it did not help.

[Rubat]

Update your Steam Client or switch off of any Steam Client Betas.