I have a question

I have a question about comodo firewall. I am trying to install an online game to my computer called kcvds (Kaiba Corporation Virtual Duel System). For some reason my firewall keeps blocking the program. Why is that? The only time I can get through is if I temporarily turn off the proactive defense. How can I install and play my online game without my firewall blocking it?

Maybe you could right click the tray icon of CIS and enter Game Mode.
You should also see with your game software vendor if you don’t have to allow inbound connection on a certain port and eventually forward a port. See here General Guide To Port Forwarding a Router if you don’t find your game.

So you are saying I should allow game mode. I will try and see what happens.