I am running essentials on Windows 10 within VMWare Fusion. I could not find the repeater using Wifi, while connecting directly to ethernet it worked well. I used all the various recommendations in the networking guide to no avail. But, I was unable to see or change any multicast settings on my LinkSys1900AC router. I switched out the LinkSys router and instead used an Apple Timecapsule to create the wireless network. Now I can discover the repeater over a wifi only connection. No special settings or gymnastics were required to get the Timecapsule to do the trick. I do have the VM network bridged with my MAC, and turned off the windows firewall and 'real time protection'. However, I had these same settings on Ethernet. Hope this helps someone down the line.