Trying to download a backup: This backup is encrypted with a different encryption key than the current one, please enter the encryption key of this backup

lianyu · November 8, 2025, 11:58am

Home Assistant Core 2025.11.0
Just did a new backup and when I try to download it to my PC I get this now:

Can someone explain what is going on here?

Thanks!

P.S. This even happens with backups in HA from 2 weeks ago if I try to download them now.

lianyu · November 8, 2025, 12:21pm

For anyone else running into this (!and panicking!), here is a thread on Github stating a fix is in the works for the next release (after 2025.11.1) and some work arounds:

github.com/home-assistant/core

2025.11.0 - problems with backups

opened 06:36AM - 06 Nov 25 UTC

mkz212

integration: backup

### The problem 1. When I want to download a backup, it shows me a message that… the encryption key is different than the one saved. I didn't change anything. It applies to both - old and new backups. It has never appeared before - I download a backup with every update. 2. When I disable the encryption of backups on the sd card, I can't download the backup at all - nothing happens after clicking "download". I don't know if the problem appeared with this update or if it was already there. 3. The text showing the estimated size of the backup is very wrong - it estimates over 900 mb but it is about 150 mb. 4. A single backup cannot be deleted. You can use the option to select many (then select one or more) and delete - this option it works. ### What version of Home Assistant Core has the issue? core-2025.11.0 ### What was the last working version of Home Assistant Core? _No response_ ### What type of installation are you running? Home Assistant OS ### Integration causing the issue _No response_ ### Link to integration documentation on our website _No response_ ### Diagnostics information _No response_ ### Example YAML snippet ```yaml ``` ### Anything in the logs that might be useful for us? ```txt ``` ### Additional information _No response_