"Steam Auth Error" on Facepunch Manchester

Other servers work fine and all my friends have the same problem. I already tried restarting Rust, Steam and the PC. The server is not offline because one of my friends is playing on it right now. He connected to it before the problem occured.

[editline]14th February 2016[/editline]

Fixed now.

[editline]14th February 2016[/editline]

I was too fast. Stuck on “Receiving Data” now.

[editline]14th February 2016[/editline]

Nevermind I’m in.