Trying to update from 21.10 to 22.04 but it fails

[jorritTyb]

Hi, I'm trying to update from 21.10 to 22.04 with this command but it fails like this:

jorrit@jorrit-Raider:~/Downloads$ sudo apt update && sudo apt full-upgrade
Ign:1 http://archive.ubuntu.com/ubuntu impish InRelease
Ign:2 http://archive.ubuntu.com/ubuntu impish-updates InRelease
Hit:3 http://ppa.launchpad.net/linuxuprising/java/ubuntu impish InRelease
Hit:4 https://ocean.surfshark.com/debian stretch InRelease
Ign:5 http://archive.ubuntu.com/ubuntu impish-backports InRelease
Hit:6 https://download.mono-project.com/repo/ubuntu stable-focal InRelease
Hit:7 https://repo.steampowered.com/steam stable InRelease
Ign:8 http://archive.ubuntu.com/ubuntu impish-security InRelease
Err:9 http://archive.ubuntu.com/ubuntu impish Release
404 Not Found [IP: 2620:2d:4000:1::19 80]
Err:10 http://archive.ubuntu.com/ubuntu impish-updates Release
404 Not Found [IP: 2620:2d:4000:1::19 80]
Err:11 http://archive.ubuntu.com/ubuntu impish-backports Release
404 Not Found [IP: 2620:2d:4000:1::19 80]
Hit:12 https://dl.google.com/linux/chrome/deb stable InRelease
Err:13 http://archive.ubuntu.com/ubuntu impish-security Release
404 Not Found [IP: 2620:2d:4000:1::19 80]
Reading package lists... Done
E: The repository 'http://archive.ubuntu.com/ubuntu impish Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu impish-updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu impish-backports Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu impish-security Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://download.mono-project.com/repo/ubuntu stable-focal InRelease' doesn't support architecture 'i386'

Any clue what might be wrong and how I can fix this? Thanks

[Snowhog]

See https://www.kubuntuforums.net/forum/...-download-page

[claydoh]

21.10 reached End of Life last month, so you have to do some extra steps to point apt to where the software archive has been moved to.

Basically, you need to edit your /etc/apt/sources.list file and change all instances of archive.ubuntu.com to old-releases.ubuntu.com and try upgrading to 22.04 again.

You use kate or Kwrite to do this, or your editor of choice.