CommanderChris

I found that, thank you. It did launch the game, but unfortunately I was already working on the next problem "unable to connect... etc" .... to solve that, I made all the .exe files run as admin, in the compatibility tab of properties. I was able to login and see other games! Took all night to figure this out, but hopefully I get a chance to test if an actual game connects and plays.

I also have this problem. 

Running version 1.12 from the Ultimate Collection on the EA store, used to be called Origin.

Also... After that. Tried connecting with a friend using Radmin VPN, through the Multiplayer -> Network (LAN) and we couldn't even find each other there, either. Tried Radmin in other games like RB6 Vegas 2, just to verify that it was working, and it works perfectly, but not C&C3 or Red Alert 3. There is something wrong with these games in general, I think.