Preferred speaker function in Alexa no longer working after latest Sonos update

Can you clarify what's not working? Are you unable to add a Sonos room as a preferred speaker in the app? The preferred speaker is setup, but voice commands aren't working properly?

If it's the former, logging out of your Alexa app and logging back in might help. If it's the latter, it sounds more like an issue on Amazon's side of things. Sonos can't play the music if it never gets the command from Alexa. You could submit a diagnostic
https://support.sonos.com/s/article/141?language=en_US after reproducing the error, post it here, and a Sonos employee will come along and tell you what they see on the back end.

In the Alexa app, I have groups set up so I can use the preferred speaker feature which allows you to say, "Alex, play _____" and it plays through the preferred speaker I set up - my Sonos speakers. Now I have to say, "Alexa, play ____ in the living room" to make it play through the living room Sonos unit. It's supposed to automatically play through the preferred speaker without having to call it by name at the end of the command. Since this functionality was added a few months back, it has always worked perfectly. After the latest Sonos update, it does not. Now, it plays music through the Alexa device unless you tell it to play through a different speaker (Sonos). This was a nice addition when they added it, and I can't figure out why it's not working now.

So I would submit a diagnostic. You could try logging out of the Alexa app, but I'm doubtful that will fix the issue.

Working fine for me. Anything changed in your network? Alexa may need to refresh the connections.

Working fine for me also.

This functionality stopped working since the 10.1 update a month ago. It's fine if you don't change anything in an existing group however if for any reason you re-discover devices you can no longer set a Sonos device as the Alexa enabled device in a group and therefore have to specify room name + lights, more information here

https://en.community.sonos.com/smart-home-integrations-229108/10-1-broken-alexa-groups-6822701

In the Alexa app, I have groups set up so I can use the preferred speaker feature which allows you to say, "Alex, play _____" and it plays through the preferred speaker I set up - my Sonos speakers. Now I have to say, "Alexa, play ____ in the living room" to make it play through the living room Sonos unit. It's supposed to automatically play through the preferred speaker without having to call it by name at the end of the command. Since this functionality was added a few months back, it has always worked perfectly. After the latest Sonos update, it does not. Now, it plays music through the Alexa device unless you tell it to play through a different speaker (Sonos). This was a nice addition when they added it, and I can't figure out why it's not working now.You perhaps need to “enable” the Alexa group with the device that you are speaking to, aswell as ‘preferring’ the speakers you wish to use. It’s definitely working here for me, as mentioned by others in this thread.

Well, magically, it started working again just fine. I made no changes, and it just started working again. Interestingly enough, I got an email from Sonos (in the app) explaining this "new" functionality yesterday, even though I've been using it for months. Something was definitely up with the update. All is OK now. Thanks for the replies. Ah that’s good news.? thanks for the update, we just need to now get mark@scan sorted with his Groups and all will be well.

Preferred speaker has broken for me also - much more than 3 months ago. I can’t say is was due to an update or not. I have delete the Group and recreated. I removed the Sonos app and restored. I have rebooted the Echo Dot and the Sonos. I did not delete / reinstall Alexa app on my phone. Suggestions?
-A2