Connection to Spotify was lost

Sonos hasn’t changed anything on their side of the equation, to my knowledge. So it’s either an internal network change in your home, or an issue with Spotify. I’d recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your Sonos system and network.

Maddening that this has been a known issue for Sonos for more than 9 months and still no fix (or even transparent discussion on why it’s happening).

Maybe this is a Spotify issue - they are due to rollout their HiFi service at some point this year. It is supposedly behind schedule, so maybe the cause of their ongoing issues has some bearing on these matters, although personally speaking, I’m not seeing any service interruptions here, but I only use their free service, with advertisements.

I'm having this issue right now and it's ridiculous. Song plays, song ends, next song doesn't play (connection to Spotify was lost). Song plays, try to skip, next song doesn't play (connection to Spotify was lost). 

If it is a Spotify issue, perhaps Sonos work directly with them to figure out what's going on if they haven't already. Also, updates on any progress on said issue would be very professional and customer friendly of them as well. 

Hmmm, so it could be something, it could be nothing, but right after posting that last message, I checked to see if maybe the Spotify app was actively running in the background on my phone and it was. I did a force stop on the Spotify app and mysteriously the Spotify connection while using Sonos app has been solid since. Unfortunately, I don't want to attempt to reproduce the problem right now because I just got my music working, but if anyone reads this, maybe try the above to see if it works for you. 

Hoped the above might be useful but unfortunately made no difference. When using my major playlist that is basically all Spotify song I either get that two consecutive songs will play ok, then the third fails, or each alternative song fails. The song that then plays also seems to sort of fade in having missed the first couple of seconds.

Because I have Android and iOS devices I’ve tried all combinations of using one or the other, both or none but nothing seems to fix it. Ironically about 6 months ago I thought this problem had gone but it’s back with a vengeance and worse than ever. Added to which to Sonos app generally seems to be getting more buggy. For example here’s my Home Screen on iOS at the moment. No Sonos playlists shown, when there are at least 5 to show and you can see the message about recently played…

this is my Android app at much the same time

I'm having exactly the same issue. I've reinstalled / restarted every component of my system and I still get the message "connection with spotify was lost" every time I try to play music. I really dont know what else I can do apart from buy some bluetooth speakers and just use the Spotify app directly. At present my Sonos system is just a number of bricks scattered throughout the house! It all worked for years...now it doesn't. I spent hours reinstalling, restarting etc. Coming to the conclusion that it's just never going to work again!

….and for what its worth, just installed Sonos on my desktop Mac, which is directly connected to my router via an ASDL cable. Exactly the same issue so nothing to do with WiFi.

For what it’s worth, I’ve converted my playlist to a Spotify playlist using free tools to export the playlist from Sonos, import it to Spotify (free tool only allows 200 songs per playlist and can’t add to existing playlists) and then merge the resultant playlists into one.

Then the playlist is available through Sonos and plays perfectly, no missed tracks or skipping half way through… and honestly now I’ve gone through that bit of pain at least now my playlist is in a piece of software that allows me to manage/sort the playlist etc in a way that Sonos has always been really poor at. The Sonos app is now just a way of selecting a Spotify playlist and starting/stopping the music.

An invalid conclusion. The Sonos controller is just that: a remote control. It sends commands to the players. They then fetch the music stream directly.

This is almost certainly a network issue. Occasionally the internet or the remote servers can be at fault, but usually the problem is local. 

I suggest you submit a system diagnostic within 10 minutes of a dropout, note the confirmation number, and contact Sonos Support. They have the tools at hand to analyse your local network conditions.