edited........


Ok now I got another problem.
I downloaded Wormkit and I got it to work, almost.

I've joined a server of my friend he hosted. When he started the match the game suddenly closed and I got back in windows... No error, nothing...
What is this?

Your router (or his router, or maybe even both) is blocking port 17011 - you need to access your router (or his router, or maybe even both) and forward port 17011 to the respective PCs.

However, when I go to a IP checking site this is the result -> 62.163.233.160
When I go to my internetoptions and check my local ip it's -> 192.168.0.107

The former is your external IP (what the internet sees when it looks at your router) and the latter your internal IP (what your router sees when it looks at your PC)


http://www.nanacide.com/wahelp/

Your router (or his router, or maybe even both) is blocking port 17011 - you need to access your router (or his router, or maybe even both) and forward port 17011 to the respective PCs.



The former is your external IP (what the internet sees when it looks at your router) and the latter your internal IP (what your router sees when it looks at your PC)


http://www.nanacide.com/wahelp/

Thanks for the help,
i downloaded wormkit and installed it. Now I can join my friends server but when he starts the game it suddenly exists and returns to windows...

Allright, thanks for the help. But I got 1 more question...
Since I'm a noob, how do I acces my router and forward port 17011??
Thank you
The link Run gave you has step-by-step tutorials.

download the patch m8