That worked, thanks. But I still don't get why it doesn't run automatically when installed by steam, since WW3 just won't run if the anti-cheat is not installed!
I installed from Steam. I would have expected any necessary parts to be installed with it. In any case, it's not like I can download that software manually! What I get is a "Launch Error" window with the text: Easy Anti-Cheat is not installed. Any idea?