core20 Can't install core20

I'm getting this error while trying to install microk8s:

error: cannot perform the following tasks:
- Ensure prerequisites for "microk8s" are available (cannot install snap base "core20": snap "core20" assumes unsupported features:

snapd2.61 (try to refresh snapd))

then tried to install core20:

error: cannot install "core20": snap "core20" assumes unsupported features: snapd2.61 (try to
       refresh snapd)

System is a Debian 12 bookworm but I don't think it is OS related. Any help would be much appreciated.

Mar 03 '25 21:03 davidcodesido

Just saw this PR, I guess it is related https://github.com/canonical/core20/pull/171

So all Debian systems that use snap are now broken?

Mar 03 '25 21:03 davidcodesido

What happens if you install first the snap snap (snap install snapd)?

Mar 03 '25 22:03 alfonsosanchezbeato

I didn't think of that. That solves it. Thanks

Mar 03 '25 23:03 davidcodesido

Ubuntu 14.04 don’t include snap by default, so I install it by command firstly.

$ sudo apt update
$ sudo apt install snapd

And then I want to install core20 via snap, it don't work.

$ sudo snap install core20

error: cannot perform the following tasks:
- Mount snap "core20" (2582) (snap "core20" assumes unsupported features: snapd2.61 (try to update snapd and refresh the core snap))

Can core20 be installed in ubuntu 14.04?

Jun 08 '25 10:06 SparkZhou1994