Sonos Port

That’s clearly your prerogative @Olengr - I can only add that the Port here (used almost daily) has been fine with the new Sonos App and in terms of that Sonod product, I’ve not seen (m)any complaints about it, even in recent times.

Once the chosen Sonos audio source has started playing from the new Sonos App, the App can be fully closed and the mobile device switched off, as it’s merely a ‘remote’ and not an ‘audio player’ so I don’t think the App is at the heart of your issue here. My earlier suggestion, still stands, but it’s entirely upto you, if you do still think it’s related to the new App.

Despite some people’s protestations that the app is merely just a controller and therefore it must be your network, the new app potentially uses new API’s in the speakers that were not in use before and may be less reliable. 

So one ‘cheap’ option is to try a 3rd party controller such as Sonophone. It’s not free, but in the context of finding something else, could be the cheapest route to working until Sonos manage to fix their new ecosystem. These 3rd party controllers use older interfaces so could be more reliable if the system was working well before the new app fell out the wrong hole … 😉

OK, for 2.4 GHz WiFi band I set my router to channel 11 and channel width to 20 MHz (was previously on Auto).  In addition Sonos posted and update for their app.  I had to cycle the Port power this morning and currently it’s working.  For how long we’ll see.

Thanks for the advice

The Port stayed connected for about 5 hours before it went south.  Maybe there was a firmware update that caused it.  I did check to see if there were any firmware updates available but no joy.

Hopefully Sonos gets it sorted out

And the fix for everything is unplug router which is going really old!! It isn’t my internet 

Seems a strange first post - your community profile doesn’t even state that you have a Sonos Port, which is the subject of this thread?

Resetting the router is an ‘easy’ fix for duplicate IP addresses, assuming the Sonos devices are unplugged first. Usually easier than setting up reserved IP addresses in the router’s UI, but less permanent, too. If a router has gotten in to a situation where it was giving out ‘bad’ IPs, it’s liable to get in that state again. 

Sonos, as a client device, doesn’t have the ability in the networking world, to set its own IPs.