I set Screen Sharing up on Ubuntu 18.04 but then found out none of my clients could connect to it. After a little digging I found that in order to use VNC Viewer (or other software) from another computer that I had to disable encryption. Yeah, not ideal but I need it to work.
First go to Settings and then “Sharing”. Make sure to turn the Slider in the upper right hand corner to the ON position.
Now Click on the settings boxes below and make sure Screen Sharing is Active and Remote Login is ON. Select your settings as below. I required a password to connect. Make sure the Network Interface is set correctly as well
Now you need to install dconf-editor with this command:
sudo apt-get install conf-editor
Now open a terminal and type
Now navigate to:
ORG > GNOME > DESKTOP > REMOTE ACCESS
Then find the “Require Encryption” setting and toggle it off
Now you can open your favorite VNC client and view your remote screen!