Oracle website seems to imply it only works on 15 and 14.
<http://dev.mysql.com/downloads/workbench/>

Also two of my Ubuntu 16.04 machines don't seem to be able to connect (Access is Denied errors for root)

[![Picture](https://i.stack.imgur.com/XRFlC.png)](https://i.stack.imgur.com/XRFlC.png)

It installs okay. It opens okay. But it won't connect to localhost.

Anyone have any luck?