So I've tried to play online coop with my friend in Borderlands. I've been unable to join his session nor was he able to join mine. I tried to play with him in Minecraft and it worked so I assume it should work. I've only succeeded once and I played with some random guy fresh off the bus. Since then, it has never worked. I tried with a bunch of randoms too but the result was the same, timeout goes to 7 then stops and a dialogue box notify me that I am unable to join.
I've seen online some topics about port forwarding. This seems quite a bit complex and I wanna see first if there is another solution. Has someone already encoutered this problem in Borderlands? If so what have you done to make it work ? Thanks for the replies