Hello, I have tried all possible troubleshooting, but I have just updated my Sonos ecosystem to version 11.4 and now 3 of my units keep disappearing.
i have managed to have the 3 back online, but they just disappeared again.
I have never experienced it before, but just after updating units, it started to happen.
it seems that after power down power up the router, solves temporarily. But I do have 2 units wired to the router and WM shows 0
Please, I really need support
Best answer by Ken_GriffithsView original