Hi @Glenns_and_Roses, thank you for reaching out to the Sonos Community and for submitting the diagnostic. I appreciate for detailing your concern in your post and for letting us know about it. Let me help you figure out what's happening.

I'd like to isolate the issue so we can create a path towards resolution.

• Any changes happened before this issue occurs? Have you been experiencing this issue since the first time you set it up?
• Have you tried rebooting your network and Sonos devices? How does Google Assistant work after?
• Have you tried connecting your Sonos One to your router via ethernet cable?

To see if this clears up the issue, please remove Google Assistant from your Sonos devices, and then re-add it back. Does the issue still continue, or does it seem to improve? You can also run through our troubleshooting guide.

We would like to have you submit a diagnostic of your system and reply back with the confirmation number. This will allow us to see how your system is functioning, and help provide a resolution.

If you need help with any other information, feel free to reach out.

1. What changed?   I added Google Assistant to the Dining Room and Living Room.  That’s it.   And the bad behavior started immediately.
2. I tried removing Google Assistant from those rooms and re-adding, that did not help.
3. I tried removing Google Assistant from the entire system and re-adding, that did not help.   (And two Ones upstairs in close proximity still work as expected.)
4. Rebooting various Sonos devices makes no difference.  The bad behavior continues.
5. I already use a wired setup.  (C’mon, really?  That's not why two speakers would do this.)

Diagnostic:  1559169500

Hi @Glenns_and_Roses, thanks for the update. I appreciate all your effort in performing all the troubleshooting to address the issue with Google Assistant  Also, thank you for submitting the diagnostic.

Upon checking on the report,  I can still see the sync errors and some of your Sonos speakers have been up for 32 days. I do understand that your concern is about Google Assistant. Your Sonos speakers not only communicate with your network, but they also communicate with other speakers.

I would like to suggest the following steps to check if this would help out. A sequential reboot means that we need to do this in order.

1. Unplug your network devices (modem, router, any wireless access points on the network) from the power and wait for 60 full seconds before you plug it back in.
2. Once the router is back online, unplug all your Sonos devices from the power. Please wait 15 seconds before you plug back them back in.
3. Force close the Sonos app from your iOS or Android device.
4. When the status light on your Sonos speakers are solid white, get back on the Sonos app and check if you're connected.

If after rebooting your network and Sonos devices, you're still experiencing the same with Google Assistant, I recommend contacting our Sonos Customer Care support with your full network setup including the make and model for each device.

We're here to answer any further questions you have.

So without me doing any of the above, it magically started working correctly.

Hi @Glenns_and_Roses, thank you for the update. I'm glad that the issue has been resolved.

If you need assistance with your Sonos or other information, please feel free to let us know and submit a diagnostic report for us to check.

We're here to answer any further questions you have.