The IP address in the game's Options > Network settings must be your computer's LAN IP (e.g. If it doesn't help, try uninstalling them and rebooting your computer. Solution 4: Do you have Hamachi, Tunngle or similar services installed? Try to disable their virtual network devices and shut them down. Solution 3 : Try adding C&C:Online to your Firewall exceptions. Solution 2 : User Elancore has posted several images of all the correct Generals and Zero Hour settings. Solution 1 : If you got the game(s) through The Ultimate Collection bundle, DOWNLOAD THIS to prevent connection issues to people that don't have The Ultimate Collection. I have trouble connecting to people online (this seems to happen in RA3 the most)