If you are using Ubuntu 24.10 (Oracular Oriole) and run sudo apt update, you may encounter the following error:
E: The repository 'http://archive.ubuntu.com/ubuntu oracular Release' no longer has a Release file. E: The repository 'http://security.ubuntu.com/ubuntu oracular-security Release' no longer has a Release file.
This happens because Ubuntu 24.10 is a non-LTS release with only 9 months of support. Once support ends, Canonical moves the package repositories from the standard Ubuntu mirrors to the old-releases archive.
Solution
You need to update your APT source URLs to point to the old releases server.
sudo sed -i 's|http://archive.ubuntu.com/ubuntu|http://old-releases.ubuntu.com/ubuntu|g' /etc/apt/sources.list.d/ubuntu.sources sudo sed -i 's|http://security.ubuntu.com/ubuntu|http://old-releases.ubuntu.com/ubuntu|g' /etc/apt/sources.list.d/ubuntu.sources sudo apt update
Why This Works
Ubuntu 24.10 repositories are no longer available on archive.ubuntu.com and security.ubuntu.com. By replacing those URLs with old-releases.ubuntu.com, APT can locate the archived packages and continue to function.
Verify the Changes
To confirm the repository URLs were updated, run:
cat /etc/apt/sources.list.d/ubuntu.sources
You should see:
URIs: http://old-releases.ubuntu.com/ubuntu
Common Issue: /etc/apt/sources.list Not Found
On newer Ubuntu versions, package sources are often stored in:
/etc/apt/sources.list.d/ubuntu.sources
instead of the traditional:
/etc/apt/sources.list
That is why editing /etc/apt/sources.list may have no effect.
