It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

×
So I recently bought the game and I installed it on my main PC and my family low end computer. The mulitplayer works for my Main, but when I click multiplayer on my Family computer it says "Unknown Error".
got the same problem :/
I'm having the same issue and cannot find a solution
Same problem :/
Same issue
Try signing into GOG Galaxy. When I had the unknown error, it showed not signed in on the bottom left. Once I signed in I could see internet servers.
I have the same issue.