I would be so grateful if anyone can help with this. I can’t be the only person who has experienced it but I can’t find any documentation or discussion on it. I have eight Sonos speakers in a pretty small house. My Wifi is excellent near all of them. Quite often, speakers disappear from the network. I have to unplug them and plug them back in again or sometimes hard reset them to get them back on. I can usually get them back but it’s random and it can take a lot of tries. But here’s the weird thing. Every once in a while, I will open the Sonos app on my phone and it’s showing only the speakers that I thought were missing! In other words, they don’t just fall offline. They disappear to some mysterious other network. (I don’t have any other Wifi network in my home. This is all on the same network.) My phone app (and always my laptop app) usually shows the “primary network” but every once in a while reveals the “other network.” That doesn’t help me. Ultimately I still need to get my phone back to the primary network and get all the speakers on that one. This happens often enough that it is really affecting my experience and wasting a ton of time. Anyone have any answers to help make sure this never happens again?!