Era 300 shows as ghost/generic speaker only in one Sonos household – works fine in another household

Hi everyone,

I’m hoping someone has seen this before.

I have a fairly large Sonos system with multiple Era 300s, Subs, Arc Ultra, Era 100s, Fives, and a Roam.

One specific Era 300 is behaving very strangely:

• The speaker works perfectly when added to a brand-new Sonos household/system.
• When I add the same speaker to my main Sonos system, it does not identify properly.
• Sometimes it shows the correct Era 300 image, sometimes it shows a generic/ghost speaker icon.
• At times the product type (“Era 300”) disappears and only the room name is shown.
• When I open the speaker page, I don’t get the normal detailed product information/options that my other Era 300s show.
• Reinstalling the Sonos app did not help.
• Factory resetting and re-adding the speaker did not help.
• Renaming the room did not help.
• The issue only occurs in my main Sonos household.

What’s confusing is that the speaker itself appears to be healthy because it works normally in a separate Sonos system.

Has anyone experienced:

1. An Era 300 showing as a generic speaker/ghost icon?
2. Missing product information/options for a single speaker?
3. A speaker that works in one Sonos household but not another?

Could this be a corrupted household record, firmware mismatch, or some kind of Sonos account/registration issue?

Any suggestions would be greatly appreciated.

Thanks!

I’d also attach the screenshots showing:

• The room appearing as a ghost/generic icon.
• The same speaker sometimes appearing as an Era 300 but without the “Era 300” label underneath.

Those screenshots will immediately help Sonos power users recognize what’s going on.