Spotify - Song Not Encoded Correctly

As frequently suggested in those various threads you mentioned, you might start with a simple network refresh, by unplugging your Sonos devices from power. Then reboot your router. Once the router comes back up, plug back in your Sonos devices. This will give both your router and your Sonos devices a fresh start, and clean up any lingering potential issues. 

I think you’ve already made a wise choice to change the channel to a less ‘occupied’ channel. 

If the above doesn’t work, I would certainly recommend that you submit a system diagnostic within 10 minutes of getting one of these encoding errors, and contact Sonos Support to discuss it.

I usually suggest the phone folks, they have more tools available, and are available Monday through Friday during business hours. Twitter support folks are available 24/7.

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

I've also been getting this exact issue, and have tried rebooting my router and each of my speakers.

Haven’t had chance to submit anything to support yet, but good to know I’m not alone! Only happens with Spotify - but testing Apple Music and that does not have the same problem.

It is useful to be aware that each streaming service has their own sensitivity to drop outs in the signal, so what is impacting one may not necessarily impact another. 

Good to know, but for me the problem even happens on the speaker I have connected to the router via Ethernet (the rest are all on Sonosnet).

I’ve tried disconnecting the Ethernet cable and running it on wifi (to rule out the possibility of a bad Ethernet cable) but I get the same issue.

I’ve had this setup for about a year and never noticed a problem until recently.

Well, it sure seems like it’s a candidate for contacting Sonos directly with some hard information. 

I explained how to do so in my original post in this thread. 

Just did and included diagnostics.   I sent e-mail directly to “support@sonos.com” because the website no longer showed an email option.   But I got an auto-response telling me that the e-mail is no longer monitored and contact options are available on the website.   Website gives Twitter or Phone.   Don't have time to sit on hold right now, and don't use twitter.  

Well, sooner or later, one of the community moderators will be along and hopefully have time to look at your diagnostic, if you post the number here in this thread. Least timely of all the options, but it is doable. 

Diagnostic:   822993831

Update:  I’ve had two calls with Sonos and no change in behavior.  They had me do all the usual:

• Restart router
• Restart all Sonos equipment
• Unlink and relink Spotify account from Sonos

One interesting wrinkle.   They had me try using the Spotify app and then “casting” to Sonos from there.   Guess what?  No issue.  This suggests a problem between Spotify servers and Sonos servers.  But then they had me continue to troubleshoot using Sonos app.   They looked at multiple diagnostics and said my system looked fine.  I pressed on wireless interference and they said I was “fine.”

I already had my Amp wired and they suggested wiring a second device in the other part of my home.   So I’ve done that and no change in behavior.   They were working towards a diagnosis of one particular speaker “Office” not having a good connection to SonosNet and they’s why they suggested wiring a second speaker.  (And no I’m not able to wire “Office.”)

So I’ve been trying a few things with interesting results:

• “Office” speaker continues to have this problem
• Tried in “Dining Room” and had the same problem (this room is not wired)
• Tried in “Master Bedroom” which IS wired and bam...same problem.
• And consistently the Spotify app “casting” to a Sonos device is rock solid.

This all points to the problem not being in my house.