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.
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