Skip to main content
Answered

Unable to Reconnect My Sonos One Gen 2 Speakers After a Factory Reset

ULunyth
Forum|alt.badge.img

EDIT: I made a mistake, it's not a Gen 2 but a Gen 1! I don't have Bluetooth on it.

Hello,

I changed my Wi-Fi network, so I wanted to reconnect my speakers. I can't do it via the app, even though I connected them directly to the router using an Ethernet cable that I had tested and confirmed to be working.

I then performed a factory reset on my speakers.
I left one unplugged, wanting to set them up one by one.
I tried the wireless setup—nothing worked.

So I plugged the speaker into Ethernet, directly into my router, and attempted to set it up via the Android app (I'm using a OnePlus 11 in perfect condition, with the latest version of the app, which I even uninstalled and reinstalled to test).

I also tried with my Samsung S5E tablet, but got the same result.
The speaker is blinking green, everything seems fine.

In the app, I tap "Add a speaker," select my Sonos One, and the app stays on "Preparing your Sonos One" for a while.
Then, after about a minute, the app says, "Connection to your Sonos One was lost. Make sure your Sonos One is powered on."

At this moment, my Sonos speaker is still blinking green, my phone is less than 20 cm from the speaker, my Wi-Fi connection is very stable on my phone, and the Ethernet cable has not been moved at all. I should mention that the cable is fully functional and was tested the same day.
(I can also see the speaker in my router’s interface, it has been assigned an IP, no ports are blocked, no firewall in the way—nothing that should interfere.)

I tap "Continue."
The app then says, "Preparing your Sonos One" again (the speaker is still blinking green).
After another minute, the app says, "Your Sonos One could not be set up. Unplug the power cable, plug it back in, and try again."

I did that. Multiple times.
I performed multiple factory resets, just in case.
I tried several solutions suggested on YouTube, Reddit, and even here.

Nothing works.
The same issue happens with the other speaker.
My router is brand new—I received it two days ago. It is fully updated, my internet connection is very stable, and the bandwidth is more than sufficient!
Wi-Fi is set to Wi-Fi 4, 5, and 6 combined.
Until I changed my router (and therefore my Wi-Fi), everything was working perfectly fine.

Can you help me, please?
Thanks for reading and for your time.


EDIT: I made a mistake, it's not a Gen 2 but a Gen 1! I don't have Bluetooth on it.

Best answer by Airgetlam

Performing a factory reset erases any error information Sonos could use to assist, unfortunately. 

I’ve got two thoughts. First, although your new router is set to WiFi 4, 5 and 6, there may be some other aspects of the WiFi signal that the Sonos can’t connect to. Check to ensure your new router matches a signal from the Sonos Network Requirements FAQ. 

However, they should connect when you wire them back to the router with an Ethernet cable. Which makes me think there might be some other issue. Any chance your router is running any port blocking software? This could be in the form of VPNs, work profiles, virus protection, a guest network, or something else that would be blocking the ability of the speakers connecting to the router, and then the device you’re running the controller in. Or your controller being on a different subnet than the speakers?

I’d certainly recommend that you call Sonos Support directly to discuss it .

When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system

View original
Did you find what you were looking for?

2 replies

Airgetlam
  • Airgetlam
  • 42688 replies
  • Answer
  • March 22, 2025

Performing a factory reset erases any error information Sonos could use to assist, unfortunately. 

I’ve got two thoughts. First, although your new router is set to WiFi 4, 5 and 6, there may be some other aspects of the WiFi signal that the Sonos can’t connect to. Check to ensure your new router matches a signal from the Sonos Network Requirements FAQ. 

However, they should connect when you wire them back to the router with an Ethernet cable. Which makes me think there might be some other issue. Any chance your router is running any port blocking software? This could be in the form of VPNs, work profiles, virus protection, a guest network, or something else that would be blocking the ability of the speakers connecting to the router, and then the device you’re running the controller in. Or your controller being on a different subnet than the speakers?

I’d certainly recommend that you call Sonos Support directly to discuss it .

When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system

Bruce
ULunyth
Forum|alt.badge.img
  • ULunyth
  • Author
  • Contributor I
  • 1 reply
  • March 22, 2025

Hello Airgetlam,

Thanks for your response.

My network has no firewall, VPN, port blocker, traffic filter, or anything of the sort.
And as you said, everything should work fine over Ethernet.

I'll try calling Sonos' French support when I can (their opening hours happen to match my work hours 😛).

Thanks again for your response!

Airgetlam
1 person likes this
  • Airgetlam
    Airgetlam

Reply


Terms & ConditionsCookie settings

Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings