Can't start the game since the small client patch today

[MechMona]

https://imgur.com/a/oXswX

As the title says. Tried verifying the game and then also reinstalling it, wouldn't work. Searched a bit and found that it could be EAC related and some windows update might be required, but there is no update available.

[c👌de_g🎷]

This is the Garry's Mod help & support section - try the front page to find the proper Rust section.