Connecting > Troubleshooting > Thread Devices Going Unreachable or Disconnecting

🆘TROUBLESHOOTING THREAD CONNECTIVITY ISSUES

Applies to Nanoleaf  Thread-enabled, Matter Over Thread Devices

If you're having trouble connecting your Nanoleaf Essentials devices, the issue may be related to an unstable or misconfigured Thread network.

— — —

⚠️ How the Problem Might Show Up

• Essentials lights are missing from the Thread Network list or show up as 'Unreachable" (and grayed out) in the Nanoleaf App

• Devices appear as “Bluetooth” instead of “Thread” in the app.

• Lights may respond slowly or not respond at all to app or voice commands.

• Delays or errors when trying to change brightness, color, or power state.

• Devices occasionally disconnect and reconnect without warning.

• Automations (e.g., schedules or scenes) don’t run reliably or are inconsistent.

— — —

Follow the steps below to get your devices connected again and functioning as expected:

Step 1

Check for Firmware Updates

• Ensure that all Thread Border Routers (TBRs), such as Apple HomePods, Apple TV 4K, or Nanoleaf Thread-enabled devices, are running the latest firmware.

• Update your mobile device's OS to the latest version for optimal app and network performance.

Step 2 

Power Cycle Your Thread Border Routers

• Unplug each Thread Border Router from power.

•  Wait at least 2 minutes.

•  Plug them back in.

This refreshes your Thread network and often resolves temporary connection issues.

Step 3 

Verify Active Home Hub (Apple Home Users)

• Open the Apple Home app.

• Tap the three dots in the top-right corner.

• Go to Home Settings > Home Hubs & Bridges.

• Confirm that one hub is marked as “Active.”

This ensures there is an active Thread Border Router managing your devices.

Step 4 

Confirm Thread Network in the Nanoleaf App

• Open the Nanoleaf App.

• Tap More (•••) in the bottom-right corner.

• Select Thread Network.

Make sure all Essentials devices are listed and connected to the same Thread network as your active Home Hub.

Step 5

Migrate Bluetooth Devices to Thread (if needed)
If some Essentials are connecting via Bluetooth instead of Thread:

• Turn off the Bluetooth-connected light (unplug or switch off at the wall).

• Wait 1 minute.

• Turn it back on.

This may prompt the device to rejoin the Thread network, if a valid TBR is available.

Step 6

Check IPv6 Support on Your Router

•  Open your Wifi router settings.

• Ensure that IPv6 is enabled [Thread requires IPv6 to function properly].

Save any changes and restart your router if needed.

⚠️ If your devices still are not showing up under the Thread network:
✅ Double-check each step above.

🆘 Need help? Submit a ticket using the form: Software Support > Connectivity Issues 
✅ Let us know which steps you’ve already tried and where the issue occurred.