I have the exact same issue. Home Assistant was working fine until around 13:00 this afternoon. I had updated to version 2025.12 earlier, but it was still running perfectly after that. Suddenly it went down. I restored a full Proxmox backup of the Home Assistant VM from last night, but I still have the same problem. The web interface works briefly when starting up, but then seems to freeze and becomes unreachable.
Can confirm the same, after a reboot, it briefly works for 2-3 minutes, then I am not able to connect anymore.
Same behaviour on previous version (when switching boot slot).
It started at 12:00UTC without any config changes directly beforehand
Same thing on my end. Also a full VM restore is not solving the issue. When checking the log, I’ve noticed that the last entry there is related to “setting up entsoe.sensor”.
Need to check if this is related in any way. Do you also have this component (ENTSO-e Transparency Platform Energy Prices) installed?
I’ve disabled the integration using the following post: Disable integration from CLI and after a reboot my system seems to be alive again. Need to further investigate.
Depends on your installation
I have it in a VM, so I just connect to the console of the VM. In your case I assume you need to connect a screen and keyboard to the NUC.
my HA instance stopped working at the same time, but removing both ENTSO and EPEX (just to be sure), doesnt solve the issue. And it looks slightly different for me too, i get a connection refused on port 8123, and NabuCasa cloud cant connect either. it is a Yellow, and i can connect over the USB-C console
Is there a way to disable/remove a HACS addon from the command line?
Same issue here. I have no idea how you could relate this to Entso-e, but the fix worked.
I was also unable to revert the update to a previous version using the CLI - eg: ha core update --version 2025.11.4