I searched your board and even though I found a lot of threads with people having the same problem, I wasn't able to find any solution.

I'm running the 3.6.29.0.Beta version. Yes, I do have a router but when I host a game, minimise it and go to http://canyouseeme.org/, 17011 seems to be open (17010 and 17012 too). I'm using Kaspersky as my anti-virus and firewall but for the sake of experiment I disabled it completely. I also disabled Windows Firewall and still nothing. People can see my game but can't join it.

What am I missing?

PS. I also can't join some of the games by others.

Is your "Force IP" checkbox unchecked?

Is your "Force IP" checkbox unchecked?

No, it's checked.

Per the Hosting Guide (http://worms2d.info/Hosting_Guide) (which you should have read, as it's part of the WKB FAQs linked to from the sticky thread), uncheck it.

Per the Hosting Guide (http://worms2d.info/Hosting_Guide) (which you should have read, as it's part of the WKB FAQs linked to from the sticky thread), uncheck it.

It helped a bit. People are able to join my games but when I click "start" it crashes to desktop (without giving any error).

One more update on the situation. I tried reinstalling the game couple of times. It works when I leave it as it is after the installation but when I update it to 3.6.29.0 it crashes when I click "start" (no matter whether on WormNET, Direct TCP/IP or singleplayer).

Do you use a CD to play?

It's possible that this thread (http://forum.team17.co.uk/showthread.php?p=680848) may be related to this problem.