Been using HA for over 5 years and currently running HAOS 2025.11.3 supervisor 2026.01.1 os 17 on a ha blue.
The ZHA is and has been working with no problems.
However I tried upgrading to HAOS 2026 updates in January and yesterday February.
Everything worked except ZHA.
I keeps cycling the “initialising” message and devices go on and offline every few seconds making the zigbee system useless.
I have 64 devices and really dont want to delete and re ad them.
I have used my backup to revert and its all working again.
Would appreciate any suggestions on what to look for in the logs or which logs to provide.
I will try HAOS on a spare computer to try and fix this problem just to keep my system running, spent over six hours yesterday faffing about for a fix.
Thank You
Start by looking in the logs. Have you tried unplugging / reseating the coordinator?
Yes I have, using a ZBT-2. I could not see what the problem is in the logs.
I am thinking of turning the ZHA log on my working system for a while.
Then installing problem update and doing same to try and see problem messages.
Its working now.
I moved install to my yellow (I was keeping this as a spare)
Same problem when trying to update.
So I moved zigbee coordinator to the Yellow internal device.
It then updated to feb 2026 with no errors.
Ran that for a week to check.
Then migrated to the ZBT-2 ( did notice this resulted in zigbee firmware install)
Now all working as expected.