Can't join the server.

[Weecow]

Try to turn off vsync in you video options menu and delete unnecessary addons. If that doesn't work put -dxlevel 80 in you launch options.

And if it still doesn't work, follow these steps

Spoiler :

Please exit Steam and go to the folder called C:\Program Files\Steam\ (this is the default location for a Steam installation - if you set a different installation directory, you will need to browse to it).

Delete all of the files in this folder except:

The \Steamapps\ folder and Steam.exe (this file is listed as an application and features the black and white Steam logo)

Restart your computer.

Then, launch Steam.exe from within the Steam installation folder, and not from a pre-existing shortcut.

With Steam running, re-test the original issue.

Note: This process will not affect your currently installed games.

If the issue persists, make sure your network is optimized for Steam: