This is a (very annoying) UI timeout, the process itself should continue. But then there’s no notification or such. It seems like Athom has left the zigbee building long ago in terms of improvements and fine-tuning.
For understandable reasons, it’s somewhat hidden:
https://tools.developer.homey.app/tools/zigbee
A zigbee reset doesn’t wipe anything but the connections and info of all previously paired (& removed) devices.
Please read this post (& it’s complete topic) for crucial zigbee information:
https://community.homey.app/t/advanced-zigbee-troubleshooting-on-homey/115930/4
The only real pain in the ass here, you’ll have to re-pair all zigbee devices again:
Either,
by web app, right-click the device and pick ‘Repair’,
or,
by activating the actual devices’ pair mode;
Start with mains-powered devices, from closest (to Homey) to farthest;
Note: to repair battery powered devices, continously push the pair button momentarily every other 1 to 2 seconds. Otherwise they go in sleep mode and can’t be reached anymore.
Not that I know of.
To revert a zigbee reset
Simply create an offline backup prior to resetting the zigbee network
This copies your Homey 1:1 (unlike cloud backups, which won’t save your ass in this particular case).
After restoring this backup, everything should be reverted.
It’s very likely the case here, see:
https://community.homey.app/t/zigbee-issue-with-homey-pro-2026-migrated-from-homey-pro-early-2023-using-usb-restore/147238
Personal experience:
I restored a zigbee free Pro 2019 cloud backup to a Pro 2026, but I had to reset zigbee 4 times until I could pair any device.
This was just to test if everything is functioning.
As I moved to zigbee2mqtt some years ago, I can’t share info about the behaviour of paired zigbee devices of my Pro 2026.