Ubuntu 21.10 upgrade throwing an error

Bhuvan

12/28/23, 12:22 PM

Setup: I have installed Oracle Virtualbox 6.1.40 on my Windows 11 host. Running an Ubuntu 21.10 VM.

Since, Ubuntu 21.10 has reached EOL, I have tried to upgrade it referring to Upgrade Ubuntu desktop. I am getting the following error. What would be the reason?

$ sudo apt update
Ign:1 http://in.archive.ubuntu.com/ubuntu impish InRelease
Ign:2 http://security.ubuntu.com/ubuntu impish-security InRelease
Ign:3 http://in.archive.ubuntu.com/ubuntu impish-updates InRelease
Err:4 http://security.ubuntu.com/ubuntu impish-security Release
  404  Not Found [IP: 91.189.91.39 80]
Ign:5 http://in.archive.ubuntu.com/ubuntu impish-backports InRelease
Err:6 http://in.archive.ubuntu.com/ubuntu impish Release
  404  Not Found [IP: 91.189.91.38 80]
Err:7 http://in.archive.ubuntu.com/ubuntu impish-updates Release
  404  Not Found [IP: 91.189.91.38 80]
Err:8 http://in.archive.ubuntu.com/ubuntu impish-backports Release
  404  Not Found [IP: 91.189.91.38 80]
Reading package lists... Done
E: The repository 'http://security.ubuntu.com/ubuntu impish-security Release' no longer has 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://in.archive.ubuntu.com/ubuntu impish Release' no longer has 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://in.archive.ubuntu.com/ubuntu impish-updates Release' no longer has 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://in.archive.ubuntu.com/ubuntu impish-backports Release' no longer has 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.

109

1 + 6

upgrade

Utkarsh Chandra Srivastava

12/28/23, 12:26 PM

Looks like networking issue?

24601

12/28/23, 12:34 PM

21.10 is now EOL https://ubuntu.com/about/release-cycle

Bhuvan

12/28/23, 12:37 PM

Thanks @24601, I am upgrading as it reached EOL.

Bhuvan

12/28/23, 1:42 PM

Thanks @Pilot6. The post helped me to understand the reason for getting the error message. I see, the resolution given by the community was quite lengthy. Most of them talked about updating the system file /etc/apt/sources.list. May be that was the case with the older Ubuntu versions. I could upgrade my Ubuntu 21.10 to 22.04 using the GUI program "Software Updater" in a simpler way.

guiverc

12/28/23, 9:45 PM

Ubuntu 21.10 (along with all flavors) is *End-of-Life* and thus unsupported on this site (https://askubuntu.com/help/on-topic), and many other Ubuntu sites, unless your question is specific to moving to a supported release of Ubuntu. https://fridge.ubuntu.com/2022/07/19/ubuntu-21-10-impish-indri-end-of-life-reached-on-july-14-2022/

guiverc

12/28/23, 9:49 PM

When a release goes EOL it's archives are *moved* to old-releases. The instructions tell you how to deal with this, so you can fully upgrade & then *release-upgrade* to the next release. Yes it's more complex when you're using a release where the next-release is also EOL (*making yours easier given 22.04 was a LTS & isn't EOL) with the instructions covering all cases.

Score:1

Ubuntu

Bhuvan

12/28/23, 1:45 PM

I upgraded my Ubuntu 21.10 to 22.04 using the GUI program "Software Updater" in a simpler way without manually updating any of the system file as suggested in the post How to install software or upgrade from an old unsupported release?

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