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Forrest
Chromatic Producer I
May 29, 2026
Answered

Problems with sound sync in latest Sonos Controller

I am running the latest Sonos firmware 17.2.3 (build 90077070) with several Sonos One’s and a Sonos Move.  My controller(s) Macbook Pro M5 Max (MacOS Tahoe) and iPhone 17 Pro (iOS 26.5) -- iOS Sonos is also up to date.

After a recent update to Sonos, I have again experienced speaker sound sync issues.   I have not changed anything in my setup or configuration.   I have one Sonos One hard-wired that was intended to overcome prior similar issues.   These speakers are all within less than 25 ft proximity to my Netgear Orbi RBR850.

So my question is has anyone noticed this degradation since recent Sonos controller updates?   I recall this being a long-term Sonos issue.

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Airgetlam
AirgetlamAnswer
May 29, 2026

Haven’t noticed this as an issue across my many grouped rooms, or individual speakers. It sure sounds like potential wifi interference , possibly from outside your home / network. Usually, the first device in the list of ‘grouped’ speakers is the coordinator, and handles the sync for all other speakers. Have you tried starting with the wired speaker first? It could make a difference, or it could not, but worth the test.

Honestly, I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

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

Bruce
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kdowling
kdowling
May 30, 2026

I haven’t seen any mention of S1 updates since this news announcement. It mentions that there is an S1 update at the end. Very informative.

Latest Software Update - Early December '25

The S1 version info above is from my S1 system.

    AjTrek1
    AjTrek1
    May 30, 2026

    The OP’s mention of the version and build is correct for MacOS as shown below for my Mac’s which are M1, M2, M3 and M4. FYI, I performed a fresh download/install to verify. I must assume (based on comments) some of you were thinking of Sonos iOS version and build.  

     

     

    However I’m not experiencing any sync issues with grouped rooms. Therefore, the issues are probably as stated by ​@Airgetlam and/or ​@Stanley_4 .

    The OP should run a diagnostic as suggested and contact Sonos Support.

    Together Everyone Achieves More = T.E.A.M.
      Airgetlam
      Airgetlam
      May 30, 2026

      Ah, that’s not firmware, as the OP stated, that’s either software or controller version. 

      Bruce
        kdowling
        kdowling
        May 30, 2026

        That’s desktop controller version. At least we now know where the version came from. The OP stated it was their firmware version. Which is what we were discussing. Firmware version.

        Edit: I need to reload/refresh pages before replying!

          Airgetlam
          Airgetlam
          May 30, 2026

          Sorry, ​@kdowling . All I can say is it happens rather frequently to me, too. 

          Bruce
            ForrestAuthor
            Chromatic Producer I
            June 3, 2026

            I'm not sure your split networking is your best option. Having your Moves on Wi-Fi and your Ones on Ethernet/Sonosnet might be complicating things. Removing the Ethernet and having all on Wi-Fi might be a better choice.

            Try removing the Ethernet and check the signal levels on the Ones, if they are adequate you should be able to stay all Wi-Fi. If there are still issues the previous post is good advice. 



            Sonos asked me to connect one speaker, because the WiFi configuration was unstable.

            Stanley_4
            Stanley_4
            Grand Maestro
            June 3, 2026

            In that case I'd look to improving your Wi-Fi system.

            A modern, good quality, Wi-Fi system has far more capability than the nearly antique Sonosnet you get when wired.

              ForrestAuthor
              Chromatic Producer I
              June 3, 2026

              In that case I'd look to improving your Wi-Fi system.

              A modern, good quality, Wi-Fi system has far more capability than the nearly antique Sonosnet you get when wired.

              Well, I have a Netgear Orbi RBR850, which should be plenty advanced enough -- especially the signal.  My speakers are no more than 25 feet from it (most shorter). 

              Airgetlam
              Airgetlam
              June 3, 2026

              Remember, WiFi doesn’t exist in a ‘vacuum’, it is impacted by influences outside your control, especially environmental, like the channel your neighbors use for their network, amongst others. And even factors ‘inside’ your network can be an issue, such as having items ‘too close’ to an emitter, or even things like failing electronics, such as microwaves. The wifi interference FAQ is a good read, as an addition to your call to Sonos. And since much of that data is transient, it doesn’t always show up in a diagnostic. 

              Bruce
              Stanley_4
              Stanley_4
              Grand Maestro
              June 3, 2026

              Not sure why you got that response from support then.

              The forum search AI assistant has good Orbi info.

              https://en.community.sonos.com/search?q=Netgear+Orbi+RBR850

               

              Maybe run through the support wifi articles? Seems to be broken right now though.

              https://support.sonos.com/en-us/search?q=Orbi

               

               

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