"Validating Game Cache Files"
A big thank you to the mods for the pin!!!
Ok, so you click to launch TF2 or another awesome game. but then, all of a sudden, BOOM! message comes up: Validating Game file cache. You: WTF I cant play my game!!! Steam: hahaha im so glitchy and they wont fix me, sorry! so what do You do? you sit there. and wait. it hits 100%. you wait some more. nothing happens. you wait some more. and some more. finally, the game wont play at all, so you come to the game hub for help. And rightly so.
I HAVE TEH ANSWER!!!!!!!!! :D
Just Reinstall the game. it takes away the cache thing and you should never need to deal with this again. If so, rinse and repeat
here are other way(s) to fix this problem:
thanks to SheaBegley for this.
Exit Steam entirely.
Browse to your Steam installation (Usually C:\Program Files\Steam\)
Rename the "steamapps" folder to "old_steamapps"
Re-launch Steam and re-install the game.
Once the installation is complete, test the issue.
If this resolves the issue, you may copy the new files into the "old_steamapps" folder and rename it to "steamapps" to restore your other games without re-downloading.
If the issue is not resolved, you can rename the folder back to avoid having to re-install other games