Hi, looking for some help troubleshooting ongoing issues with Alexa and Sonos Voice Control on my Era 300 speakers. Hoping someone has experienced something similar or has suggestions.
My Setup
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Arc Ultra
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Sub 4
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2x Era 300 (rear surrounds, in a surround setup with Arc)
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Voice assistants in use: Sonos Voice Control and Amazon Alexa
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Era 100s in various other rooms
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TV connected via eARC HDMI to the Arc Ultra which is then set up as surround sound with the Sub 4 and the 2x Era 300 speakers.
What Happened
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Initially, I had both voice assistants working fine on all three speakers (Arc + both Era 300s).
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Everything was smooth for ~1-2 days.
Then I reconfigured my home network, included some VLANs for network segmentation and reconfigured the DHCP settings (lease lasted for 120 minutes so after 2 hours the speakers should have renewed with the new DHCP settings).
Side note: 2.4GHz WiFi network SSID and password stayed the same, so devices should have reconnected without any issue.
Post-Network Change Issues
One of the Era 300 speaker (“Speaker A”) (reset after losing connection):
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Did not rejoin the network after the reconfiguration and disappeared from the Sonos app.
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I followed Sonos’ reset instructions (unplug → hold Bluetooth button → plug back in until green light).
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Successfully re-added it to the app and surround setup.
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Re-added both Alexa and Sonos Voice Control, all worked fine at first.
The other Era 300 speaker (“Speaker B”) (not reset):
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Had trouble during voice assistant re-setup:
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Sonos Voice Control:
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Setup completes too quickly (~10 sec).
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Doesn’t respond to “Hey Sonos.”
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Alexa:
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Failed to sign in, gave a really generic error something like:
“Something went wrong, please try again later.”
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“Try Again” just loops with no progress (Sonos should really give more descriptive errors, or an error code of some sort)
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Temporary Success, Then Failure Again
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The next morning, I retried setup on Speaker B:
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Alexa setup finally worked.
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Could use voice commands like weather and smart home controls.
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Sonos Voice Control also worked.
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That evening, both Era 300 speakers (A and
stopped responding to voice assistants:-
Alexa icon showed exclamation mark.
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App prompted “Fix it” but:
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Trying to sign in gave same “something went wrong” error again.
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“Hey Sonos” also stopped working on both.
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This cycle has now repeated for several days:
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Mornings: try re-setting up both speakers, sometimes one work first try and the other doesn’t until trying a few more times. Sometimes both don’t work but ends up working after a few retries. Sometimes both works first try.
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Evenings: both disconnect again. Same thing as morning, sometimes one work the first try while the other doesn’t, etc.
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Sometimes it takes hours of retrying (restarting app, tapping “Try Again” repeatedly) before one or both reconnects.
Other Notes
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Arc Ultra has had no issues, both assistants always stay connected.
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Other Era 100s in different rooms are also working fine with Alexa and Sonos Voice Control. Did not have to do any re-setting up after the network reconfiguration.
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Throughout all of this:
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Both Era 300s continued to appear in the Sonos app.
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They still play music or sounds from TV normally as surround speakers.
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So it doesn't seem to be a Wi-Fi issue, only voice assistants are failing.
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It is really troublesome to fully reset the Era 300 speakers as the socket is inside the wall with a hole for the cable to come out (for aesthetic purposes, which now seems like a really bad idea). So I would have to unmount the speaker in order to unplug it.
My Questions
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Is this a known issue with Era 300s?
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Could this be due to the surround setup?
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Why would only voice assistant functionality drop while everything else (app visibility, audio playback) stays stable?
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Is there anything else I can try to avoid the assistants disconnecting daily?
Any help or ideas would be appreciated, this has become a frustrating part of an otherwise great system.
Thanks in advance!