This means using the normal commands to initiate. Once the Deco M9 Plus is introduced the issue occurs.Īll the Echo's work other then the multi-room feature. They can access internet for weather and all other features requiring internet. All phones, computers, network based thermostats all work as expected when Deco's are active.ĭeco M9 Plus Firmware: 1.2.12 Build 20191014 Rel. Amazon does not natively support multiroom for third party skills such as My Media for Alexa (or any others). It also works echos on 2.4, 5g-1 and others on 5g-2 so it does not appear to be a band. When everything is using the AC4000 it works.

Itt appears the Echos on the Decos can not talk to each other and believe they are on different networks.

3 Deco M9 Plus units are distributed throughout my home in Access Point mode all hardwired to router via a TP-Link switch (TL-SG1008D). The AC4000 is set to Router mode and 'Smart Connect' so SSIDs are the same for 2.4 and 5g. When the Deco's are powered off I can setup multi-room audio on Alexa without issue however as soon as I power on the Deco's some of the Alexa Echo's attach to the Deco's and I experience the issues. I have the AC4000 as a router along with the Deco M9 Plus mesh. Once I select one of the devices, some of the other devices display Network Error and grey out and can not be selected. Upon setup all devices show Online to the same network. Voice services (Amazon Alexa, Google Assistant) may vary and may not be available. All devices are on latest software version. I've powered everything off and then back on.

The issue seen on Alexa is 'Device Unreachable Error' during Multi-Room Music Set up. Having the same problem with Alexa multi-room music.

Alexa multi room music