Steam updates any corrupted or missing files when you verify your game files, ensuring that the game has all the data it requires. Your game might be missing one or more files if it is glitching, ...

This post features solutions to fix the Files failed to validate and will be reacquired error in Steam. The number of file/s mentioned could be 1, 2, 13, 14, 33, 38 ...

You can try updating your graphics drivers, lowering the graphics settings, clearing the game’s cache, verifying the integrity of the game files, increasing virtual memory, checking for overclocking ...

If Steam is stuck on Verifying Installation, then this post may help. Steam is a digital video distribution service and storefront by Valve. The platform allows gamers to purchase, download, and play ...

TL;DR: "Verify Integrity of the Game Cache..." first thing after it decrypts and downloads an update. Otherwise, it will probably crash to Desktop. A lot of people are having difficulty getting it to ...