Yeah, never thought I’d be writing a guide that explains how to sign out of something. After all, RealVNC Server does not have a Sign Out button for some ungodly reason. Anyway, it turns out that all you need to do is delete a file that stores these credentials. If you’re on Linux, you will find it at /root/.vnc/config.d/vncserver-x11.d/CloudCredentials.bed. Delete it with sudo rm /root/.vnc/config.d/vncserver-x11.d/CloudCredentials.bed