I have had a Sonos Play 1 for some time and have had no problems playing Sonos Radio. I have just bought a Sonos Arc which is connected to my home system. I can still play Sonos radio on my Play 1 but when I try to play Sonos Radio on my Arc I get the following messages: “Unable to play the radio station” or “Unable to play “Name of Station” - the associated account was not found in your Sonos system”. I can play radio on the Arc via other streaming services like Tunein but Sonos Radio will not work. Please advise how to resolve.
Sonos Arc won't play Sonos Radio
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Same here…..Just tried to play today and won’t work. Worked yesteday….only Sonos Radio stations.
I would recommend that both of you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it, or post the diagnostic number here for a Community Moderator to pick up.
There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.
When you speak directly to the phone folks, there are more options available beyond just the diagnostic analysis.
Me too. I have submitted a system diagnostic and I am awaiting a reply 
I noticed the same problem starting yesterday, but also I received an update notification on my Sonos S2 app (on macOS). I let my system upgrade, and after a few minutes, Sonos Radio is working again on all my speakers. Not sure that will solve it for everyone, but I am very happy! I did not have time to open a request yesterday due to $dayjob, my apologies, but with the update, it seems it is solved.
No update notification for me, but in the past hour it has started working again. I am still in discussion with the support team to establish the root cause.
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