I downloaded the patch for The First Decade and it fixed a lot of bugs. It allowed me to play online on Renegade and Red Alert, Tiberium Wars, Yuri's Revenge and so on but all of them have empty lobbies. Either nobody plays those games anymore or it's just my connection. But that isn't any of my concern at the moment.
I'm almost 100% sure that the Zero Hour online community is very much alive today, but it says that I have no connection to the Zero Hour servers, please check your internet connection. My Internet is perfectly fine, and I am able to play CnC4 and Renegade online.
Please help, Zero Hour is my favorite CnC by far and I am really want to play online.