This started happening about a year ago. I have a Sonos One wired to my router, and a Playbar and two more Sonos Ones (in separate rooms) connected on the SonosNet network. Everything works fine, until the router reboots due to a power outage or other reason. When the SonosNet network comes back up only the wired Sonos One and the Playbar are recognized. I have to unplug and plug back in the other two Sonos Ones for them to be recognized again.
Any ideas on what might be causing this? I’ve tried changing the wireless channel, resetting the speakers and swapping out the wired Sonos One. No luck with any of it.
Thanks in advance.