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Answered

Sonos ONE refuses to reconnect to system

  • May 11, 2025
  • 10 replies
  • 129 views
G

Hi all. My ONE is refusing to reconnect to my WiFi and system. Had it for a couple of years with no issues but a couple of weeks ago it stopped responding when I asked Alexa questions. I reset it back so that it has green flashing light, go into the Sonos app and it shows up asking if I want to connect, I say yes and then it pings up saying not found? 
I also have a Beam, couple of Play:1’s and a Roam and they all work fine.

I haven’t changed WiFi or any settings, it’s just decided it doesn’t want to play?

Help!!!

Best answer by AjTrek1

Sounds like a network issue and/or could be a failing network card in the One. Best option at this point is to try connecting it one more time. If it should fail run a diagnostic within 10 minutes of the failure. Make note of the reference ID number. Do not post the reference ID in this thread. Call Sonos Tech Support so they can look at what’s in the diagnostic. 

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10 replies

AjTrek1
  • AjTrek1
  • 7386 replies
  • May 11, 2025

If you reset the One to factory settings you must click on “Add speaker or component”. For all practical purposes your One is a new product once factory reset. 

Together Everyone Achieves More = T.E.A.M.
Belly M
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  • Belly M
  • 1786 replies
  • May 11, 2025

Power it off, Reboot your Router, whilst it reboots close the Sonos app on your phone / tablet and restart it.

Now wait five minutes and then try again.

G
  • Graham5372
  • Author
  • Contributor I
  • 3 replies
  • May 11, 2025

Done all of that, even tried connecting it direct to router and it still doesn’t see it.

 

it knows it’s there as it prompts me to connect it to the system!

 

AjTrek1
  • AjTrek1
  • 7386 replies
  • Answer
  • May 11, 2025

Sounds like a network issue and/or could be a failing network card in the One. Best option at this point is to try connecting it one more time. If it should fail run a diagnostic within 10 minutes of the failure. Make note of the reference ID number. Do not post the reference ID in this thread. Call Sonos Tech Support so they can look at what’s in the diagnostic. 

Together Everyone Achieves More = T.E.A.M.
Belly M
Forum|alt.badge.img+21
  • Belly M
  • 1786 replies
  • May 11, 2025

You could also unplug the Ethernet lead and try using Wi-Fi, it’s as if your Router is blocking Wi-Fi to Ethernet connections..

G
  • Graham5372
  • Author
  • Contributor I
  • 3 replies
  • May 11, 2025

You could also unplug the Ethernet lead and try using Wi-Fi, it’s as if your Router is blocking Wi-Fi to Ethernet connections..

Tried using just WiFi first, then tried with Ethernet, no joy with either

G
  • Graham5372
  • Author
  • Contributor I
  • 3 replies
  • May 11, 2025

Sounds like a network issue and/or could be a failing network card in the One. Best option at this point is to try connecting it one more time. If it should fail run a diagnostic within 10 minutes of the failure. Make note of the reference ID number. Do not post the reference ID in this thread. Call Sonos Tech Support so they can look at what’s in the diagnostic. 

How do I run a diagnostic? Thanks.

 

Ken_Griffiths

​@Graham5372,
Is the mobile controller device WiFi connection perhaps currently set to low-data mode? Perhaps also ensure local network access for the mobile App and Bluetooth are enabled/available for device setup.

edit: Also ensure the mobile device meets the App requirements shown in this LINK.

Airgetlam
  • Airgetlam
  • 44832 replies
  • May 11, 2025

Here is how to submit a system diagnostic. 

Bruce
Airgetlam
  • Airgetlam
  • 44832 replies
  • May 11, 2025

Ah, I should add this caution…Sonos doesn’t automatically look at diagnostics, unless you call in. In which case it wouldn’t be automatic, I guess ;)

It is discussed in the Diagnostics - How do they work? thread.

Bruce
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