· One audio zone missing while others appear as expected
Restart Affected Device
· No, the issue is still the same even after a restart
Restart Roon Server
· No, the issue is still the same even after a restart
Restart Network
· No, the issue is still the same even after a restart
What is the operating system of the affected device?
· Nucleus/ROCK
Describe the issue
I can't see my sonos Play 3 all of the sudden it is gone. I still see my Sonos Play 1, my Node and headset etc. I have rebooted everything by now. in the sonos App I do see the play 3 and in my Wifi network I see it. Only my Roon is clueless. What to do?
As a first step, can you confirm the play 3 is on the same local subnet as your server and other audio devices?
For example:
Roon Server: 192.168.1.x
Play:3: 192.168.1.y
Play:1: 192.168.1.z
If they’re all on 192.168.1.*, that’s good.
If one device is on 192.168.0.* or something else, that’s the problem - your router or mesh created separate subnets.
If that doesn’t help, try rebooting in this order:
Power off all Sonos devices.
Restart router / access points.
Start Roon Server and wait 2–3 minutes.
Power on the Play:3 last.
Then check Roon → Settings → Audio → Sonos devices.
If you still have issues, and you use a mesh or multi-AP Wi-Fi, check the below router settings:
“Client isolation” or “AP isolation” should be off.
“Multicast enhancement” or “IGMP snooping” should be on.
These settings affect how discovery packets move between Wi-Fi and wired networks — Sonos → Roon needs those packets.
We’ve also enabled diagnostic mode for your server, so the next time you bring it online it should send over a fresh diagnostic report for our team to review further.
