EASY STEPS: Verify Integrity of Game Files On Steam [Updated]

There can be instances when your Steam game doesn't function as expected, crashes without warning, has strange visual anomalies, or is missing world models. Having a corrupted game cache can result in any of these problems. Allowing Steam to validate your game files is a good way to check if they're completely legit or to fix problems like the "Steam is already running" message.
This is one of the troubleshooting steps required when a Steam game is malfunctioning. Follow this guide's instructions to verify the integrity of your game files.

[urazoktay]

Amazing video, it helped a lot, thank you.

[kurttis]

Are u out of your mind when u click verity integrity of steam game u redownload it again it not just few minutes it may take the whole day if u have bad connection it will take a month u will never be able to play during that time...vertify integrity only at your home internet that have more then 300mbps if u in hotel room don't ever ever vertify integrity u will never able to play your game for a years