I got it to work, so I am going to mark this as resolved. Still not sure what all is going on

Basically downloaded glance guest exe version 4.17.1 doesn't work. I looked through some clients downloads folder and found that it has been on that version for quite a long time, so I know it used to work. But I literally tried it on about 20 different computers, 4 physical locations, Windows 10, 8, 7. Also completely formatted one PC and did a fresh Windows 10 installation - all do exactly the same thing, which is nothing at all.

Now, when I explained this to a support agent today he showed me a different way to do this. If you do screen sharing from QB desktop on the web page where you download Glance there is a troubleshooting link. If you click on that there is an option to start Glance directly from inside the web browser and that does work! So in case anybody else has the same problem that's the solution. Once I was able to get him in and showed him the problem he was able to provide an answer.

I do appreciate everyone here taking the effort to try to help me. Thank you