Issue with Matter on self hosted Homey

Not-pierre · December 18, 2025, 8:09am

Hi everyone, I’m having an issue with an new IKEA Matter device.

I have a self-hosted Docker setup running on a Synology NAS, with a Thread border router via an Apple TV connected to the same network.

When I try to add a device, the setup goes smoothly until the naming step. Then, the screen stays stuck for about 10 minutes before timing out.

I’ve tried 4 or 5 times, resetting the device each time, but nothing works.

Does anyone have any ideas?

Waldo · December 18, 2025, 8:17am

From within the Homey mobile app which option did you pick? I expect it might have something to do with that, although I haven’t played with HSG myself yet. Connect via Homey Pro or Connect via Android or iOS, the latter option will connect it to your phone’s preferred thread network, in this case your Apple TV.

The first option wouldn’t work since your HSH hardware won’t have any hardware to support thread. So if you’ve been trying to add it via the homey option every time, try the other one.

Mike_de_Vries · December 18, 2025, 8:25am

I have also issues. When using the share code from any other matter device, It works till the screen that it tries to communicate with the device and then error 0x00ce (I believe) and then no device.
Tried it many time, connected thru Apple (IOS) and not Homey!

robertklep · December 18, 2025, 8:29am

Matter requires a proper IPv6 setup of your server and your Docker environment.

Mike_de_Vries · December 18, 2025, 9:30am

The NAS runs ipv6 , and the docker is running in network mode HOST so there is ipv6 then.

James_Butler · December 18, 2025, 10:33am

You can not share devices from Apple (or anything) TO Homey (afaikat).. there is no option to select if the device is new or already in use.. connect first to Homey and share it from there to other places

Easiest is to add the Matter Bridge app instead of sharing it with pairing codes.. this way you can also easily share Zigbee and other devices.

My idiotic setup.. Homey SHS and Homey Bridge, add matter devices to Homey, then use the Matter Bridge app to share it with Home Assistant, from there share the Matter Bridge with Apple Homekit.. works freaking well

Not-pierre · December 18, 2025, 11:36am

@Waldo Thank you for your reply. Actually, I can’t select that option when adding the device in question. Perhaps this is a limitation of self-hosting?

Mike_de_Vries · December 18, 2025, 1:57pm

This is the error I get when trying to connect to the matter device.

(works on Homey Pro, and Homekit, but not on SHS with ipv6 enabled)

homey-shs | Homey [log][ManagerApiLocal] IO homey:manager:drivers:emitPairingEvent
homey-shs | Homey [log][ManagerMatterLocal] [Pairing:0x1908be3b] Start

homey-shs | Homey [log][ManagerMatterLocal] [Pairing:0x1908be3b] Got status update: SEARCHING (-0x01, Unknown)
homey-shs | Homey [log][ManagerMatterLocal] Updating PAA certs
homey-shs | Homey [log][ManagerMatterLocal] DCLs: https://on.dcl.csa-iot.org. Git: false

homey-shs | Homey [log][ManagerApiLocal] IO homey:manager:drivers:emitPairingEvent → Success 204

homey-shs | Homey [err][ManagerMatterLocal] [Pairing:0x1908be3b] Finished with error: Unknown error (Matter code: INTERNAL (0x00ac))
homey-shs | Homey [err][ManagerMatterLocal] [Pairing:0x1908be3b] Could not cleanup pairing: Unknown error (Matter code: INTERNAL (0x00ac))
homey-shs | Homey [err][ManagerMatterLocal] [Pairing:0x1908be3b] Could not stop pairing: Could not stop pairing (Matter code: INCORRECT_STATE (0x0003))
homey-shs | Homey [err][ManagerMatterLocal] [Pairing:0x1908be3b] Failed: Unknown error (Matter code: INTERNAL (0x00ac)) (at stage: unknown)
homey-shs | Homey [log][ManagerApiLocal] IO homey:manager:drivers:emitPairingEvent
homey-shs | Homey [log][ManagerApiLocal] IO homey:manager:drivers:emitPairingEvent → Success 204

Mathias_Jensen · December 20, 2025, 4:36pm

Did you find a fix?

Mike_de_Vries · December 20, 2025, 5:36pm

No , it just does not work, I will wait for an update of the SHS, must be some first-start issues. We are not the only ones, so it is not something we did wrong.

Colinator · December 20, 2025, 9:43pm

I have this issue as well on my SHS, cannot add my Govee AI Sync Box 2 to Homey

ffap · December 21, 2025, 7:25pm

I’ve used HASS for a looong time, but now with SHS, I finally started using Homey. Most of the stuff looks nice and clean, so off to a good start But, SHS should work with Matter, but i cannot install Matter devices/bridges.

Getting this error in the log after connecting:

Homey [err][ManagerMatterLocal] [Pairing:0x10f2d765] Finished with error: Unknown error (Matter code: INTERNAL (0x00ac))
Homey [err][ManagerMatterLocal] [Pairing:0x10f2d765] Could not cleanup pairing: Unknown error (Matter code: INTERNAL (0x00ac))
Homey [err][ManagerMatterLocal] [Pairing:0x10f2d765] Could not stop pairing: Could not stop pairing (Matter code: INCORRECT_STATE (0x0003))

The unknown part not really helping here. Any ideas how to look further or what this could be?

robertklep · December 21, 2025, 7:27pm

Search around on the forum, you’re not alone.

Bram_H · December 29, 2025, 4:22pm

My IPv6 setup was not correct. I corrected it. Let’s asume I am right, and the setup is correct in my network and in the dockers. Adding matter devices is not working.

Can anyone confirm that at this moment:

Homey‑SHS currently binds only to IPv4. Even in host mode, Docker cannot “force” an app to use IPv6. Homey‑SHS itself is not opening any IPv6 listeners. This is an application‑level limitation, not a Docker or host issue, thus we

Wait for Athom to add IPv6 listeners to Homey‑SHS.

robertklep · December 29, 2025, 4:36pm

Matter doesn’t require Homey-SHS to open ports on an IPv6 interface, discovery is done using mDNS and it’s Homey that connects to the devices. It’s irrelevant if Homey-SHS binds its webserver to IPv4 only.

Bram_H · December 29, 2025, 4:52pm

Thank you

Bram_H · January 1, 2026, 1:17pm

Still driving me nuts. I cannot get any Matter device connected to Homey. It always ends in 0x00ac. unable to connect internal (0x00ac).

I’ve bought different devices, the most recent is the shelly 1 gen 4. The idea was that it does not required a hub to update the firmware. I started with the matter devices from Ikea, but I do not have an ikea hub, so maybe these ikea devices miss a required firmware update or something . Then I tried Switchbot smartplugs. I was able to connect the Switchbot devices to Homey, but I wasn’t really certain it was via Matter… Adding them was a weird process and it took a zillion years for them to get detected.

The Shelly wanted to update the firmware on its own, since I connect it via Wifi to the internet. That worked. The Gen4 versions can connected via Wifi , Zigbee and Matter. I tried Matter, and the first time I tried, all worked like I would have expected. Fast responsive “next-next-next”… great, until the final step. After it says, devices added to Homey I get the next screent that says: unable to connect internal (0x00ac)
(sad trombone)

I tried to add it to Homekit (AppleTV or Homepod)… works as expected.
Enabled “Paring Mode” in Homekit and tried to add it to homey.

Same result… unable to connect internal (0x00ac).

Where should investigate?

Quaasteniet · January 1, 2026, 1:26pm

Homey Self-Hosted Matter-over-Thread - Matter pairing 404 error: "PairSession with ID ... Not Found" - #3 by Quaasteniet same problem

Bram_H · January 2, 2026, 12:48pm

I can check the logs on the Shelly easily when I scan the Matter QR code… Everything works fine on the shelly side. Shelly finishes, and then I see the Unable to connect on my iphone.

Today I paused all policies I have. Any that could block any is now off.
Reboot… same error.

The only thing that I did notice is that Shelly does not display the QR code anymore after this; it states: The device is commissioned to 1 fabrics. Reset the Matter to remove the device from all fabrics.

Even though there is no mention of the Shelly device in Homey anywhere…

Shelly Log

Connected.