Good evening.
One of my remote sites where I have 34 zigbee devices through ZHA just disappeared.
I have a HubZ HUSBZB-1 coordinator, and I do not recall that I made any updates to it.
Right now on HA 2026.07.02
It appears to show up in the hardware list.
All other things (Z-Wave, etc.) seem to function properly, and it is a combo stick.
It shows that the controller is somehow associated with “Default Lightlink Group”. I am not sure this is new, or something added in previous updates, but i do not recall it. likely coincidental.
Any suggestions?
If i have to redo each device, that is 2,000 miles of drive 
Did you restart HA or reboot the host.
Thanks!
Yes, both.
Interestingly, I did an “add zigbee” devices, and one of the devices showed up.
Tried it again. The rest seem to time out. 
This is from the “Add device” “Searching for Zigbee devices…” interface log.
[<Task pending name='cluster_poller_[MAC address]-1-2820-em_poller' coro=<periodic.<locals>.scheduler.<locals>.wrapper() running at /usr/local/lib/python3.14/site-packages/zha/decorators.py:75> cb=[set.remove()]>] executing periodic task [zha.application.platforms.sensor::AggregatedClusterPoller._refresh]
Feeding watchdog
[<Task pending name='device-availability-checker_DeviceAvailabilityChecker' coro=<periodic.<locals>.scheduler.<locals>.wrapper() running at /usr/local/lib/python3.14/site-packages/zha/decorators.py:75> cb=[set.remove()]>] executing periodic task [zha.application.helpers::DeviceAvailabilityChecker.check_device_availability]
Device availability checker interval starting
Checking device availability
[0x1D77](lumi.weather): last_seen is 219090.6268107891 seconds ago and ping attempts have been exhausted, marking the device unavailable
[0x1D77](lumi.weather): Update device availability - device available: False - new availability: False - changed: False