Why is the server list not showing up? Why am I getting disconnected?

To fix server list not showing up and/or disconnecting from timeouts, navigate to your %AppData%\SCP Secret Laboratory\Internal and delete CentralServers, then relaunch your game.

If this doesn't work try turning off any active anti-virus and installing Malwarebytes from: https://www.malwarebytes.com/mwb-download/thankyou/

Once Malwarebytes is installed run a full scan and quarantine any detected threats.