TF2 Stuck in Validating Loop

Penguin

Clinically Diagnosed with Small Mapper's Syndrome
aa
May 21, 2009
2,039
1,484
title says it all, game won't launch because it's perpetually validating over and over again

how fix
 

killohurtz

Distinction in Applied Carving
aa
Feb 22, 2014
1,016
1,277
Close hammer, and if it starts another validation after you've done that, restart steam. It happens because the game files in use by hammer can't be modified while they're open.