I have this issue frequently. When I play music particularly from the Spotify app, the Sonos app is not aware that it's playing music. This has happened even when I've used the Sonos app to initiate playback on hardwired speakers. 10 minutes later when I open the Sonos app again, it doesn't realize it's playing music. I have to wait a long time or start some new music l in order to stop it. These are hardwired Sonos devices with in in ceiling speakers so I can't simply push the hardware pause button. Is this a known issue? And is a fix in the works? This seems to have started with the new app roll out.
Just wondering if you have multicast ‘device discovery’ issues across your network that’s preventing the controller device from communicating with your Sonos speakers. See attached re: SSDP/mDNS.
Such communication failure can occur across networks that use WiFi extenders, EoP adapters, or if managed switches are misconfigured. It can also happen if some settings on a local router are incorrect, or there’s software running on the mobile device that is getting in the way of the multicast communication, such as security software, VPN client, firewall, site blockers etc.
I’d perhaps investigate further in the areas mentioned and if still no luck then it maybe best to reproduce the issue(s) seen and then immediately submit a Sonos system diagnostic report from within the Sonos App, note it’s reference and contact/chat with Sonos Support Staff via this LINK and see what the Staff can perhaps suggest to help you to resolve the matter.
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