Hello.
I'm stuck in the same boat.
Have also tried most so called "solutions":
- Reinstalled the game
- UPnP and port settings
- Checked (and even disabled) the firewall
- Reset both Router and Modem
- Proxy settings
- Run as Admin
- etc etc...
What I find strange in my case is that the 40050000 error has not been consistent.
First time I started the game after downloading I got the 40050000 error, closed and restarted the game, no error and connected immediately to the ea server.
But the joy was shortlived, I instead got a controller bug where the car would only turn left and the handbrake was stuck on.
Closed the game once again to google solutions for the controller problem, restarted the game some 25-30 min later and now I once again got a 40050000 error.
Restarted the game and no 40050000 error, but still could not get the controller to work. Closed the game to unplug my controller and try to play with just the keyboard.
Since then I have been stuck with the 40050000 error...