As per the title, seen this a few times now. Found various other posts but all closed for further comments.
Submitted diagnosis number 285123403
Best answer by Ken_Griffiths
Quite possibly a weak WiFi signal, or wireless interference around your Sonos devices. Maybe try a different ‘fixed’ non-overlapping 2.4ghz WiFi channel on your router (either channel 1, 6 or 11), ...or better still, consider cabling a single Sonos device to your router (if practicable) to move all your Sonos products over to SonosNet.
If you do decide to opt for SonosNet, which I tend to recommend to family and friends etc; then also do these two additional things:
- Set the SonosNet channel in “Settings/System/Network” of the Sonos App so that it is at least 5 channels away from your chosen router 2.4ghz channel.
- Remove/reset the WiFi credentials in the Sonos App “SettingsSystem/Network/Wireless Setup”. These are not needed when running the devices on SonosNet.
One further useful thing I would choose to do, is to add the Sonos IP addresses to your networks' DHCP Reservation Table… this is an optional, but worthwhile, step.
Hopefully that will then resolve your streaming music service dropout issues.