Skip to content
MappleCare Community ↗

MappleCare Community

[Solved] Apple TV 4K encountering Matter Accessory Showing ‘No Response’ in Apple Home App after update (tvOS 18.0)

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 encountering Matter Accessory Showing ‘No Response’ in Apple Home App after update (tvOS 18.0)

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • November 14, 2026 at 8:47 pm #12058
    Timothy Phillips
    Community Contributor
    Diagnostic Hardware Specs: Apple TV 4K (3rd Gen) 128GB Wi-Fi + Ethernet | OS Version: tvOS 18.0 | Archive Source: Apple Support Community #256465485

    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 0xd0f4: 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?

    MacBook Pro 16″ M2 Max (96GB) | Pro Display XDR | iPhone 16 Pro | Geneva, CH
    iOS / Swift Engineer | "Verified Apple Discussions Archive"
    November 14, 2026 at 8:47 pm #12059
    Stephanie Bryant
    Community Contributor
    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.

    Mac Studio M1 Ultra (64GB) | BenQ SW321C | Final Cut Pro 11 | Helsinki, FI
    Apple Certified Support Professional (ACSP) | Final Cut Pro / DaVinci Colorist & Editor
  • Author
    Posts
Viewing 2 posts - 1 through 2 (of 2 total)
  • You must be logged in to reply to this topic.