I installed it correctly and then i logged into live and i updated it and once it was done i went back on started halo2.exe and it came up with this message "LIVE gaming failed to initialize. This may be because another LIVE gamingon Windows application (such as halo2 dedicated server) is running on the same machine. Otherwise reinstalling the game may fix this problem."
So i restarted my comp and went to play it and the same message so i uninstall it. and then reinstall it then ihad to update it again and the same exact thing happaned and i really wanna play. :( plz help meh.