Skip to content
MappleCare Community ↗

MappleCare Community

[Solved] Matter Accessory Showing ‘No Response’ in Apple Home App on HomePod OS 18.1: Diagnostic steps and permanent fix

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

All Forum Rooms

Home › Forums › HomeKit, Apple TV & Smart Home › [Solved] Matter Accessory Showing ‘No Response’ in Apple Home App on HomePod OS 18.1: Diagnostic steps and permanent fix

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • November 15, 2026 at 12:22 am #15446
    Paul Mendoza
    Community Contributor
    Diagnostic Hardware Specs: HomePod mini (Stereo Pair) | OS Version: HomePod OS 18.1 | Archive Source: Apple Support Community #256333345

    I am running into a persistent issue on my HomePod mini (Stereo Pair) running HomePod OS 18.1.
    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 0x7cef: 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″ M3 Pro (36GB) | Studio Display | Magic Mouse & Trackpad | Barcelona, ES
    Product Designer & Design Systems Lead | "Verified Apple Discussions Archive"
    November 15, 2026 at 12:22 am #15447
    Kimberly Flores
    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.

    iMac 24″ M3 (16GB) | Kawai MP11SE Stage Piano | AirPods Max | Los Angeles, CA
    Apple Certified Support Professional (ACSP) | Classical Pianist & Spatial Audio Arranger
  • Author
    Posts
Viewing 2 posts - 1 through 2 (of 2 total)
  • You must be logged in to reply to this topic.