ubuntu disco Release 404 Not Found

ubuntu disco Release 404 Not Found

Hi,

I am trying to update my Ubuntu 20.04 desktop but it is failing.

The sudo apt-get update command throws following error:

sudo apt-get update
Ign:1 http://in.archive.ubuntu.com/ubuntu disco InRelease
Ign:2 http://in.archive.ubuntu.com/ubuntu disco-updates InRelease
Ign:3 http://in.archive.ubuntu.com/ubuntu disco-backports InRelease
Err:4 http://in.archive.ubuntu.com/ubuntu disco Release
  404  Not Found [IP: 43.255.166.254 80]
Err:5 http://in.archive.ubuntu.com/ubuntu disco-updates Release
  404  Not Found [IP: 43.255.166.254 80]
Err:6 http://in.archive.ubuntu.com/ubuntu disco-backports Release
  404  Not Found [IP: 43.255.166.254 80]
Ign:7 http://security.ubuntu.com/ubuntu disco-security InRelease
Err:8 http://security.ubuntu.com/ubuntu disco-security Release
  404  Not Found [IP: 91.189.91.38 80]
Reading package lists... Done
E: The repository 'http://in.archive.ubuntu.com/ubuntu disco 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://in.archive.ubuntu.com/ubuntu disco-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://in.archive.ubuntu.com/ubuntu disco-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://security.ubuntu.com/ubuntu disco-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.

How to solve this issue?

Thanks

View Answers

January 17, 2021 at 5:22 PM

Hi,

Remove the content of /etc/apt/sources.list file and add following:

deb http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse

deb http://archive.canonical.com/ubuntu focal partner
deb-src http://archive.canonical.com/ubuntu focal partner

Save the file.

Now you will be able to update your system.

Thanks

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