VNC is only available on certain images. Please look for the GUI or Desktop tags on the Featured images.
Images with VNC/GUI/Desktop enabled will displayunder the LINKS items in the instance detailed view (found by clicking on the instance title). You may have to use your browser's refresh button to make it appear .
Simply click onto start a browser-based VNC implementation.
External VNC Viewer:
Alternatively, if you would like to use a different VNC client (which must support encrypted connections, for example realvnc viewer [free] ), please follow these instructions.
a Note: the default VNC session will only work for the user that launched the instance. Other user accounts on that instance that wish to have an individual desktop will have start their own VNC manually.
b Disconnecting your VNC session via the Real VNC viewer: