this post was submitted on 09 Sep 2026
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ZHA started randomly dropping devices (lemmy.linuxuserspace.show)
submitted 3 days ago* (last edited 2 days ago) by Strit@lemmy.linuxuserspace.show to c/homeassistant@lemmy.world
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For years I have had my zigbee network functional with a ConBee2 zigbee coordinator in my home assistant box.

But this week, devices started to randomly drop off the zigbee network. I could re-pair them and get them in again. But yesterday, it suddenly dropped 24 devices... Sensors, buttons and lightbulbs seem to be the most common ones.

I've restarted the ZHA integration, restarted the docker container, even downgraded to 2026.8.3. Still the same.

I checked the Home-Assistant github repo issues and there are lots of issues regarding zigbee and dropped devices in the last 2-3 weeks.

Does anyone have any suggestions as to why this happened all of the sudden?

The zigbee network has been stable for years before this.

EDIT: At this time I have re-paired all the devices and will see if they start dropping off again.

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[–] 18107@aussie.zone 1 points 3 days ago (1 children)

Have you made any changes to your network or bought any new devices in the last week?

I once had a new house battery (SigEnergy) interfere with my smart lights by spamming my network with discovery packets.

[–] Strit@lemmy.linuxuserspace.show 1 points 3 days ago (1 children)

I have not added anything new in the last couple of months.

[–] roofuskit@lemmy.world 1 points 1 day ago (1 children)

How many repeaters does the mesh have? Is it possible one vital repeater is having issues which is causing systemic issues?

[–] Strit@lemmy.linuxuserspace.show 1 points 1 day ago

Maybe about 18 repeaters all over the house.