Alexa issues when switching wifi networks

It sounds like you have split your Sonos devices between two different Sonos ‘Households’, perhaps you have those on the same, or different, Sonos account credentials, but that doesn’t matter here.

As a quick test, are you able to say if you were to take a Sonos product from your Office to your Home, would it auto-connect to the Home Sonos system automatically? - or vice versa? If not, then Alexa is unlikely to work for both your systems.

To get around this, you first need to put your office Sonos devices back onto your Home system/household and then add the office WiFi network to those devices and take them back to the office, so that all remain part of the same Sonos Household (albeit on different WiFi signals) - Alexa will then work without having to uninstall/reinstall the Sonos Skill. 

So just remember that an Amazon Alexa account is not limited to Sonos accounts, but it is limited to one single Sonos Hiusehold.

Here is an example (attached) of a single Sonos Household that has multiple WiFi networks - so Alexa will work on the devices in the system when the device is operating on any of the wireless networks listed.

So I could have my Sonos speakers at Home on the ‘MobileLink-5G’ WiFi network and then take some speakers to work, where they will auto-connect to the ‘Localnet-PC’ WiFi network and I can use Alexa at both locations because the speakers are always attached to the same Sonos Household/System.

edit: the mobile controller(s) App is able to be used at both Home/Office locations but only the Sonos devices on the mobile connected WiFi network will appear in the Sonos App.

When setup correctly, all your speakers will be catered for/viewable in the same Sonos App when connected to the same WiFi network as your mobile device.

If you then navigate to ‘Settings/System/Network/Manage Networks’ in the Sonos App, you will/should see both your Home WiFi network and your Office WiFi network listed in that area of the App. You can add networks to the Sonos system using the ‘Update Networks’ feature.

Much appreciated Ken. I confess that I am confused as to how to consolidate to one Household. I don’t see this as an entry on the app settings anywhere. Is this the same as ‘System’? Note that both my home and office networks currently appear on the Manage Networks page exactly as you show in your screen grab. Does this mean I am already on one Household?

Yes, you ‘might’ be setup okay (perhaps🤔?), that’s if you do have both the Home/Office WiFi networks showing in the Network area of the Sonos App - to be absolutely sure, take one office ‘Alexa enabled’ speaker Home and see if it automatically appears in the same Sonos App. It should appear alongside all your Home Sonos speakers. Check Alexa is working on all and the devices are listed in your Amazon Alexa App device list.

If the office speaker does not appear alongside all your Home Sonos speakers, the easiest way, is to factory reset the speaker and just add it to your Home system (remember to setup Alexa too and check the assistant is working) and then take the office soeaker back to work, where it will/(should) connect automatically to the work Wifi and Alexa will (all being well) continue to work without uninstalling/reinstalling the Sonos skill.

If it becomes necessary, you can then reset any ‘other’ speakers left at work and add them to the speaker you brought from Home using ‘Settings/System/Add Product’ all will work with Alexa and add Alexa to those other speakers too, as required.

Hope that assists and you are able to get all working. I know it works, as I do a very similar thing myself.

Good to know it works for you and that there is light at the end of the tunnel. I may first try to do a factory reset of the Sonos device I have at the office (ironically named ‘Family Room’, since that’s where I swiped it from). If that doesn’t work then I will drag it back home. 

You will need to have the office device at your Home to sort it, that’s if it is not already part of the Sonos Home Household/System, as you need at least one of your Home devices visible in the Sonos App to add it to the same HH. I hope that makes sense.

Figured that was the case, yes.

Ken - did not go well. Was able to take the One home and reconnect and reset. But, when I returned to my office today the Sonos app couldn’t locate anything. Restarting the app resulted in it creating a new System. So will now need to go home this evening and delete/reinstall Alexa skill. I may be stuck having to do this twice a day.