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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 someone asks.

Exact Ubuntu version.

$ lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 21.10
Release:    21.10
Codename:   impish

Edited: this question is about 22.04, not about 21.10, thanks for not closing it.

RogerS
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1 Answers1

23

There are no more Canonical updates for Ubuntu 21.10 "Impish Indri" as of 14th July, that's why you can't update.

You can continue using 21.10 at the risk of e.g. security vulnerabilities that will no longer get patched but I would recommend upgrading to latest 22.04 "Jammy Jellyfish" LTE

Here is how to upgrade after EOL: https://help.ubuntu.com/community/EOLUpgrades

RogerS
  • 105
Lorberta
  • 555