I can't start or join a server

If I try to start or join a server, I get this:

I’ve removed all of my addons, and restarted GM. And that’s when I took this screen shot.

It just means that someone is signed into your steam account, or you just signed in on another computer.

That’s the problem. No one else is on my account, this only happens in Garry’s Mod for me.

Delete clientregistry.blob in the steam folder. Fixes every known steam problem EVER!

Fixed that for you :3

Actually, deleting that file worked for me :buddy: