Sonos is so unrealiable. I am just fed up. Many times I hear music and suddenly it stops. I have 5 sonos loudspeakers at home (sonos one) . The wifi network is excellent. Sonos is just lousy.
Best answer by controlav
Not sure how you are verifying your WiFi is excellent, but try using SonosNet instead, it is usually a better choice for all but the simplest systems.
If problems persist then gather a diagnostic and give the code to Support.