Perhaps the easiest way to access your server over VNC is to click ‘Show screen’ from the control panel. This will open a VNC window in your browser. We recommend using Google Chrome or Firefox for best results.
If you prefer a dedicated client program, you’ll find that our VNC service requires a reasonably recent client. TightVNC works well on Windows, and clients based on gtk-vnc such as Vinagre work well on Linux. The RealVNC Enterprise Edition Viewer is good on Linux, Windows and MacOS if you set the “Always use best available colour quality” (or set FullColour to Yes in the Expert panel on the MacOS version of RealVNC). The Linux and MacOS versions of this are available as a free download on the RealVNC web site.
Neither the Apple Remote Desktop VNC client, Chicken of the VNC, nor JollysFastVNC work correctly on MacOS as they don’t support some of the newer protocol features which we use.