Hi, i don't know why, one day i'm playing on a family copy of arc raiders with friends and everything is fine, the next day the game doesn't work, the properties shows a size of 0B and yet the 372 files are succesfully validated.
Also weird thing, but the game boots up ? It loads normally, shows the epilepsy warning and then says that the online services are unavailable (i had a friend streaming me the game meanwhile, they were available)

I tried to reinstall it, but it show 0B too and instantly says it's ready to play.

I've tinkered around with steam's settings too (clear download cache and changed the download region) but nothing seems to works.
I've also tried to download other games and it works fine.

I'm kinda lost, if anyone has pointers that'd be helpfull.