Roon not detecting any audio devices

[mjw (Here I am with a brain the size of a planet and they ask me to pick up a piece of paper. Call that job satisfaction? I don't.)]

Please provide the information shown in the following post plus screenshots of what you see.

I'm having a problem with Roon -- how do I report it?

How To Get In Touch With Roon Support If you’re having a problem with Roon and something isn’t working as expected, you’ll want to make a post in the #support category. To help our team resolve your issue, please make sure to describe the issue, and describe your setup. Describe The Issue When you start a thread in the #support category, make sure to include: What’s not working How often the issue occurs This could be “every time I start the app”, or “every time I click a certain button”,…