Skip to content
MappleCare Community ↗

MappleCare Community

Reply To: [Solved] Apple TV 4K Matter Accessory Showing ‘No Response’ in Apple Home App (HomePod OS 18.1) – Verified Troubleshooting

Find answers from other Apple users or start a discussion about your device.

All Forum Rooms

Home › Forums › HomeKit, Apple TV & Smart Home › [Solved] Apple TV 4K Matter Accessory Showing ‘No Response’ in Apple Home App (HomePod OS 18.1) – Verified Troubleshooting › Reply To: [Solved] Apple TV 4K Matter Accessory Showing ‘No Response’ in Apple Home App (HomePod OS 18.1) – Verified Troubleshooting

November 14, 2026 at 10:14 pm #13244
Emily Mason
Certified Tech (Lvl 5)
Apple Recommended / Verified Community Solution
This canonical solution was verified and marked as solved in the Apple Support Community archive.

Enabling IGMP snooping / multicast forwarding and rebooting primary Thread Border Router.

Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:

  1. In home router Wi-Fi settings, enable IGMP Snooping and disable ‘AP Isolation’.
  2. Power cycle your primary Thread Border Router (Apple TV 4K connected via Gigabit Ethernet).
  3. Power-cycle the unresponsive Matter accessory for 10 seconds to prompt a fresh Thread mesh re-route.

Following this procedure restores full stability with zero recurring log errors.

MacBook Pro 16″ M2 Max (96GB) | Pro Display XDR | iPhone 16 Pro | Chicago, IL
Apple Certified Support Professional (ACSP) | iOS / Swift Engineer