If Alexa has gone quiet on your Sonos — no response to "Alexa," or the light doesn't come on — don't assume the speaker's broken. Nine times out of ten it's the microphone switched off or the voice service needing to be re-added in the app. Both are quick, so check the simple stuff first.
Start with the microphone
Sonos speakers have a physical mic button (and an LED that shows its state). If the mic light is off, the microphone is muted and Alexa can't hear you — tap the mic button on top of the speaker to turn it back on. People bump this constantly and assume Alexa died.
A note on which speakers: Alexa works on voice-capable Sonos (Beam, Arc, Era 100/300, Move, Roam, the One, etc.). The original Play:1/3/5 and Port/Amp have no microphone — they can't do on-speaker Alexa at all, only be controlled by an Echo elsewhere.
Then re-add the voice service
If the mic's on and Alexa still won't respond:
- Check it's actually set up. In the Sonos app: Settings > Services & Voice > Voice (or Add a Voice Assistant). If Alexa isn't listed for that room, add it and sign into your Amazon account.
- Remove and re-add Alexa. A stale link is common — remove the Alexa voice service from the room, then add it back and re-authorize. This fixes most "set up but not responding" cases.
- Reboot the speaker. Unplug it for at least 30 seconds, plug back in, and wait for it to rejoin before testing.
- Check the network. Voice needs internet — if the speaker's having Wi-Fi trouble (missing from the app, dropping out), fix that first; Alexa can't reach Amazon's servers without it.
A couple of gotchas
- Wrong room / no Echo grouping confusion: if you also have Echo devices, make sure you're talking to the Sonos and that Amazon's "preferred speaker" routing isn't sending responses elsewhere.
- App updates: after a major Sonos app update, voice services sometimes need re-authorizing — if everything broke at once after an update, re-add the service.
FAQ
Why won't Alexa respond on my Sonos? Usually the microphone is muted. Tap the mic button on top of the speaker — if its light is off, that's your fix.
Does my Sonos even have Alexa? Only the voice-capable models (Beam, Arc, Era, Move, Roam, One) have a mic. The Play:1/3/5, Port, and Amp don't. If you're shopping for one with a mic, our Sonos speaker picks flag which support on-speaker voice.
Alexa was working and just stopped. Re-add the Alexa voice service in Settings > Services & Voice, and reboot the speaker. A stale authorization is the common cause.
It hears me but gives errors. That's a network/account issue — check the speaker's Wi-Fi and that your Amazon account is still linked in the Sonos app.