Basically, Kind of a big deal.
I started up steam, said hi to my friends, and one asked to join his game. I did.
Sadly, it came up saying something along the lines of ‘You are required to run steam to join this server’
Strange, so i restarted gmod. (Restarted, not reinstalled).
Same thing happened again.
So i decided to manually join the server, i went to INTERNET SERVERS.
‘You must be running steam beta to use find servers.’
So i told my friend. He said to delete Clientregistery.blob in my steam folder, i did, but still the same Required steam thing happens.