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I am trying to $ sudo apt update but I get this:

Reading package lists... Done                                                                                                                        
E: The repository 'http://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://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://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.
E: The repository 'http://archive.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.

I haven't touched the Software & updates - other software OR the sources.list just in case some asks.

Exact Ubuntu version.

$ lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 21.10
Release:    21.10
Codename:   impish
Andrew Mbugua
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    https://askubuntu.com/ may be able to help you quicker. – 9769953 Jul 24 '22 at 15:03
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    this is a very good question, but since SO mods are a bit overzealous these days, you should probably post to superuser.com instead. – user1167662 Jul 25 '22 at 03:32
  • if you change `archive` (or in my case `de.archive`) to `old-release` in `/etc/apt/sources.list` it will work again. For example the first URL looks like this now `deb http://old-releases.ubuntu.com/ubuntu/ impish main restricted` – guettli Aug 07 '22 at 11:16
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    @user1167662, this isn't about "overzealous mods", but about this question having nothing to do with programming. It's off topic. Please review what is on topic in the [help/on-topic]. – ChrisGPT was on strike Dec 18 '22 at 13:01

1 Answers1

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For those who will find this post later on a more detailed answer is here 21.10 Removed Repositories

Support for Ubuntu 21.10 ended the 14th of July 2022 therefore you're going to have to upgrade.

Andrew Mbugua
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