There is a service notice about this posted now by Sonos now under Support, and it has been discussed in the “Update on the problems with Google automation routines” thread, but it deserves its own topic.
A couple of days ago Sonos speakers using Google Assistant stopped responding to any media playback commands from Google, including Play, Stop, Set volume etc., although basic Google Assistant commands like “Time?” and “Weather?” were still working. Only Google was affected - Alexa, Home Assistant and other services could still perform those functions through the Sonos api. So either Google has their own api, or Google was being specifically blocked.
Sonos suggests removing and re-adding Google Assistant from the speakers as the solution, but if you expect that to be less than straightforward, you’re not wrong. My Sonos app on Android successfully removed Google Assistant, but as others have been reporting for 5 months now, it could not re-add Google Assistant, getting stuck in a “No Connection - Retry?” loop. The workaround users came up with (no thanks to Sonos) is to use iOS instead of Android, Fortunately I have an up-to-date iPad, so I was able to do that. Final step necessary after re-adding Google Assistant to Sonos is that you must also re-authorize Sonos in Google Assistant.
