Hello! First of all, I have read the how-to thread.
I've been working on this for a couple of hours now and I feel I'm out of options. I have the Origin Ultimate Collection, version 1.04. I'm running Win 7 x64 and I have GenTool_v7.0 installed (only Gentool, I don't have the CnC Online launcher).
I just got the game on Humble Bundle. I'm able to log in C&C Online, I can see the differente lobbies (1v1, 2v2, etc). If I join a game I can play with no issues. However, when I want to host a game, I get the "Lost connection to C&C Generals Zero Hour Online", and it throws me back to the main menu. The lost connection window appear just after clicking on Create Game.
Just out of curiosity, I logged in to CnC Online from CnC Generals, and I was able to host a game without any error messages. So apparently there's something wrong with ZH.
Things that I have tried:
1) tried every step on the Common Issues & Solutins thread
2) open the required ports on my router
3) added generals.exe to Windows Firewall
4) disables windows firewall as well as my router firewall
5) enabled DMZ
6) made sure that generals.exe is set to run as administrator and with Win XP SP3 compatibility
7) uninsalled/reinstalled gentool. Also uninstalled and reinstalled the whole game.
8) checked ZH's network configuration and it's ok: public and lan IP's are the same as my PC IP
9) also tried opening UDP port 16000, set it as firewall exception on ZH and also enabling the Send Delay option
I believe that's about all. It's really weird. A friend and I got it at the same time. We tried it yesterday and he was able to host right off the bat without any tinkering.
Any help will be appreciated!