[Zubersoft]

That usually points to a firewall issue (if you have anti-virus software installed, for example), or the router is blocking broadcast messages for some reason. If you have a mesh router, the mesh functionality can also block broadcast messages. Lastly, make sure all of your devices are on the same band if you have both 2.4 Ghz and 5 Ghz bands.

One of my plans for next year is to switch all the discovery messaging to use DNS SD which won't be blocked by routers/firewall software in the same way. So this should improve things once it's available.

Mike