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.

  • hendrikEnglish
    2•2 days ago

    Hmm. Coincidentally I had my Zigbee network break apart on the weekend as well. I have a different Zigbee radio, but I’m using ZHA as well. I restarted everything, turned the Zigbee devices off and on again (including removing the batteries from some switches and motion sensors) and now it seems to be working again.

    Dunno if Home Assistant is experimenting with some AI-assistant refactoring or something… But I tend to run into issues lately. 2 weeks before that my OpenWRT device tracker stopped tracking half of the devices. It still does some IP addresses for some reason ¯_(ツ)_/¯

    • StritOPEnglish
      2•2 days ago

      I’ve repaired an item or two multiple times the last couple of days.