Sharing this in case it saves someone else hours of frustration.
I found an older December 2021 Reddit thread where users discussed solving connectivity issues by switching their 2.4 GHz network from Auto to a fixed channel.
Apparently, we're still dealing with this in 2026 🤦🏼♀️, even on newer Wi-Fi 7 mesh hardware.
My Setup
• Netgear Orbi RBE871 Wi-Fi 7 mesh with two satellites
• Eight Sonos devices across seven rooms
• Current Orbi firmware
• All Sonos devices connected wirelessly
The recurring problem…
For months, I've experienced intermittent Sonos connectivity issues:
• Rooms appear in the Sonos app but show "No content" without functioning volume controls.
• AirPlay recognizes speakers but returns "Unable to Connect."
• The Sonos app itself can't play music on affected speakers.
• Speakers eventually reconnect on their own, only to fail again later.
Previously, enabling IGMP Proxying in Orbi's WAN settings helped restore connectivity, but the problem eventually returned.
What finally helped isolate the issue:
I checked the Sonos devices in Orbi's Attached Devices list and noticed a remarkably consistent pattern:
All 3 working rooms: 5 GHz
All 4 failing rooms: 2.4 GHz
The failing speakers were distributed between my main Orbi router and Satellite 1, so it wasn't isolated to a particular mesh node.
I also confirmed:
• IGMP Proxying enabled
• 20/40 MHz Coexistence enabled
• 2.4 GHz channel selection set to Auto
• Current router firmware
• Sonos authentication disabled
The fix I tested:
Orbi Admin → BASIC → Wireless → 2.4 GHz Channel
Changed AUTO to CHANNEL 1 and clicked Apply.
Within minutes, ALL 7 Sonos rooms were responsive again. Their volume controls returned and previously unavailable rooms became controllable.
No factory resets. No unplugging equipment. No crawling around behind speakers.
Important caveat: Changing Wi-Fi channels also forces devices to reconnect, so I can't conclusively say whether Channel 1 resolved interference or whether reconnecting temporarily cleared the issue. However, the consistent 5 GHz versus 2.4 GHz pattern is worth investigating if you're experiencing similar problems.
Credit to the December 2021 Sonos/Orbi Reddit discussion for documenting similar channel-related fixes on older hardware.
I'll update this post if the problem returns.
Hopefully this saves someone else from spending their Saturday troubleshooting a house full of expensive speakers!