The first thing you have to do is go to your Steam library > right click on the game > go to Properties > Updates > press the drop-down arrow under "Automatic updates" > select "Only update this game when I start it" and then go to to the game from Steam.
The culprit for this problem seems to have been that Steam did not automatically download the update, and when trying to start an outdated version of the game this problem appears.
Thus ends this article on how to correct error code 3:9001 in Battlefield 2042, without a doubt this is a fairly common problem but with a very simple solution that you already know.
Tags:
BF2042
Platform(s):
Microsoft Windows PC, PlayStation 5 PS5, Xbox Series X|S, PlayStation 4 PS4, Xbox One