I am having the same problem. rfactor was working fine for me, but since doing an extensive hardware change (board, cpu, ram) i cant get any server results either. rFactor is the first and only program i have put back onto my machine after a fresh install of windows 7. Windows firewall was activated by default when i first tried rfactor and i didnt even get a message if i wanted to allow the game to connect to the internet. But even now i have turned it off, i still cant get online. PC is wired to a router but this has never caused me any issues before. I dont know what else to try . I can login fine enough and it welcomes me in the text box. Hope someone can help.
Ignore previous post. Wrong date in windows, corrected it, now i see servers . Now i can enjoy my new build