If you are looking to fix legitimate Steam issues, you should use official tools rather than external .rar files:

hey everyone this is Tim from Your Six Studios today in this video I'm going to show you how to repair your game library on Steam. YouTube·YourSixStudios How To Scan & Fix Your Games In Steam PC Tutorial

: Trusted versions of such fixes are generally only found on specialized community sites like Online-Fix.me or referenced in communities like Reddit's CrackWatch .

How to Repair your Game Library on STEAM if Not Working (Best Method)

: These files are designed to trick Steam into thinking you are playing a free-to-play game (often Spacewar ) so that you can use Steam's invite and server systems with a pirated copy of the game.