OK, I know there are a lot of posts about this problem, but I can't find the solution.

I just bout the DVD of COD MW3 for PC and installed the game, this is my first call of duty game.

So when i choose Multiplayer the normal game is closed and the multiplayer game starts. And when I chick on Play,

it's connecting to online service for about 30 seconds and then this messege showes up

The COD MW3 server is not available at this time. Please try again later or visit

https://www.callofduty.com/mw3/stats for updates.

I'm tierd of searching for a soluttion. And please don't tell me to change my connection/router settings, that won't work.