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I have an older Sonos system (Z100’s purchased back in 2007 or so).

Until recently, it worked just fine.   Then my local internet provider (Xfinity) did some type of update and ever since I have had trouble.

Sometimes, I get a message on my app that it is unable to connect to a system.

Other times, 2 rooms come up (out of 5 in my system).

Then other times, the other 3 rooms show up, but the other 2 do not.

I have not had any luck working with Sonos support to address this problem.

Dave

I am assuming you are using the S1 app so I make suggestions on that belief.

  1. Do you have a Bridge still connected to your router? If so, remove it and connect a ZP100 instead. The Bridge has been removed from support. This will also create SonosNet like the Bridge.
  2. Check for firmware and security updates. There was an update this month for the S1 app.
  3. It may help to power down everything: router, Sonos devices and your phone for 5 minutes. Then starting with the router, power it on and allow it to fully boot. The one Sonos device at a time, power them on and allow them to fully boot before moving onto the next one. Then power on your phone and connect to your system,

Hope this helps.

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