Skip to content
MappleCare Community ↗

MappleCare Community

[Solved] Apple TV 4K Matter Accessory Showing ‘No Response’ in Apple Home App (tvOS 18.0) – 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 (tvOS 18.0) – Verified Troubleshooting

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • November 14, 2026 at 11:28 pm #14543
    Kenneth Fernandez
    Community Contributor
    Diagnostic Hardware Specs: Apple TV 4K (3rd Gen) 128GB Wi-Fi + Ethernet | OS Version: tvOS 18.0 | Archive Source: Apple Support Community #256643111

    I am running into a persistent issue on my Apple TV 4K (3rd Gen) 128GB Wi-Fi + Ethernet running tvOS 18.0.
    Whenever the machine encounters IPv6 mDNS Multicast DNS routing failure between 2.4GHz Wi-Fi and Thread Border Router, the following diagnostic log appears in Console:

    homed: [Matter] Transport connection dropped for NodeID 0xe490: IPv6 unreachable via Thread mesh

    I verified that hardware connections are intact and tested across different power sources. What is the verified diagnostic procedure to permanently eliminate this symptom?

    Mac Studio M2 Ultra (128GB) | ASUS ProArt PA32UCG-K | OWC ThunderBay 8 | Munich, DE
    Final Cut Pro / DaVinci Colorist & Editor | "Verified Apple Discussions Archive"
    November 14, 2026 at 11:28 pm #14544
    Rachel Kim
    Lead Moderator
    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 14″ M4 (32GB) | iPhone 15 | Vancouver, BC
    Apple Certified Support Professional (ACSP) | Security Analyst
  • Author
    Posts
Viewing 2 posts - 1 through 2 (of 2 total)
  • You must be logged in to reply to this topic.