As the title suggests. Bought it the other day when it went on sale, I finally come to test it this evening and it locks up and doesn't even let me alt-tab, so I had to sign out and back in to Windows. Anyone else got similar issues? Any solutions?

Yes, after I signed out, signed in and launched the game again, alt-tabbed and saw that Windows firewall dialog box, you know the one, asking if you allow the connection. I allowed and it worked.

If that dialog box don't show up again, try setting up a rule on your Windows firewall settings to explicitly allow the game's executable to connect to the internet.

Worked for me and that's probably the root of your problem there, the firewall.

Thanks a bunch! Yeah, the dialogue box never popped up I guess.