Thank you for contacting Sophos Home support. So here are the steps (as per Sophos email) :

UPDATE : Solution I got from Sophos works. I will try to contact Sophos with my findings. Something is wrong with Sophos, but it would seem to be on at specific user level - meaning it’s blocking me, but it’s allowing my partner (we’re living in the same house). Re-enabled Web Protection, stopped working. Went to Sophos and deactivated Web Protection and after that, Mac desktop controller worked again. He’s running macOS Big Sur, I’m on Catalina (10.15). Checked on my partner’s Macbook : it worked there.Verified the Firewall settings on my to make sure Sonos is a recognized and authorized app (was there already).Uninstall Sonos 2 controller app (with App Cleaner) and reinstalled it, no success.Both of which now can’t connect to my 3 Sonos speakers from the desktop app.

I also am running Sophos on my iMac and Macbook. Since yesterday morning, I’ve started to have the same problem. When you speak directly to the phone folks, there are more options available beyond just the diagnostic analysis. There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution. Once the router comes back up, plug the Sonos back in.īut there’s no guaranty here, it still could be some sort of intermittent wifi interference while they’re not wired, so it’s certainly worth reading the linked FAQ.īut if it continues, after checking those possibilities, I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it. Just unplug all Sonos devices from power, then reboot the router. In fact, that, while being an extremely slight possibility, wouldn’t hurt to check. That will certainly go a ways to identify if there could be some wifi interference , although not a duplicate IP address. Next, try linking both the Mac and the Sonos to the router with Ethernet cables, and see if the error continues to be reproducible. first, check to be sure the Router’s firmware is up to date. These are all up to you, and whether you can do them…. Nothing springs immediately to mind, so a few suggested tests, to see if the issue can be more accurately identified.

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