Why is the installer all graded out?
why can't it find the speaker?
why can't they tell you what settings they need?
why can't it find the wifi?
why won't it just make a new connection and be done with it?
Why have we got to play for hours and hours making sense of a system that doesn't actually work very well?
and does even less by way of instructing users how to set it up if Sonos can't manage it for themselves -
Let's hope Sonos are never put in charge of the space program: 'Sorry we can't get your ship back to earth as we think the wifi has been changed, or is it the router? Sorry, can't find your speaker now, please continue to orbit indefinitely in cyberspace...'
Jeez, come on Sonos you've been going long enough now to have ironed out these schoolboy errors
Best answer by Airgetlam
This is relatively simple. You've changed the SSID. The Sonos system is still looking for the old SSID, and not the new one. Since the Sonos system is actually existing on the speakers, and not actually in the remote control that is the controller app, you need to force a connection to one of the Sonos devices. The only way to connect at this point is to wire one of the Sonos devices to your router with an ethernet cable. If you do that, and wait 2 or 3 minutes, all of the Sonos devices will switch over to SonosNet, at which point they'll show up in your controller. You can then go in and change the wifi settings in the app, and the data will get communicated to all of the speakers. At that point, you can disconnect the ethernet cable, and all of your speakers will be connected to your current wifi.
This has been explained, by me, and dozens of others over and over, and over, and over.
Until you connect to one of your speakers with an ethernet cable, and tell it what to look for, it will continue to look for the data that you told it before.