2025.12.0 update failing

I’m running Core 2025.11.3. I can get 2025.12.0 to 100%, HA restarts, and then when everything comes back up… I’m still on 2025.11.3 and the upgrade notification persists.

Nothing in the logs matches anything relevant for search terms core, upgrade, 2025, 12, etc. Not seeing anything there.

Running Supervisor 2025.11.5, Operating System 16.3, Frontend 20251105.1.

I have the same problem

Me, too. I think for me it might be a memory issue but not sure.

I tried again. VM at steady-state:

VM at ~75% core upgrade progress:

The CPU usage spiked to 64% for a moment I think during the install, but that was as exciting as it got. RAM utilization never went above 59%.

Odd though, this time it only showed the progress bar & no progress percentage:

Once the bar got all the way to the right HA restarted. It did take unusually long to come back up… at least 10x typical startup time. No real change from steady-state VM resources. Once everything is loaded, HA is as responsive as ever. Just sitting at 2025.11.3 with an available upgrade to 2025.12.0 still showing.

If I knew what to look for in the logs, I’d post it. For the record… this is the first time I remember having an issue upgrading HA Core in 4 years or so.

I see 2025.12.1 was released. I’m having the same issue upgrading to that version.

I should note that HA restart times when I’m not attempting an upgrade to 2025.12.x are typically pretty quick. For example, I just upgraded the NR add-in and HA restarted fully in around 2 minutes or so.

It’s only when I attempt an upgrade to the latest HA Core that the restart gets dragged out.

Also relevant, I guess:

Just as a test, I tried to upgrade in Safe Mode. I don’t think I’ve done this before and am not sure if it’s actually a good idea… but that’s what backups are for. Anyway… same result: prolonged journey to 100%… unreasonably long restart time, and still on Core 2025.11.3.

Just wanted to chime in having the same problem (HA running in VM with plenty of storage and memory available).

Might be related

Definitely related, thanks. I’ll post over there.