Support Installation on Ubuntu 25.10 (Question Quokka)

[bblommers]

Preconditions

• No need to upgrade Python SDK or the Python SDK is ready.

Description

Following the official installation instructions fails on Ubuntu 25.10. Specifically, the step sudo apt update fails with:

Ign:7 https://packages.microsoft.com/repos/azure-cli questing InRelease
Err:8 https://packages.microsoft.com/repos/azure-cli questing Release
404 Not Found [IP: 13.107.213.42 443]
Error: The repository 'https://packages.microsoft.com/repos/azure-cli questing Release' does not have a Release file.
Notice: Updating from such a repository can't be done securely, and is therefore disabled by default.

It does work if I manually change the release version to Noble (Ubuntu 24.04), by running the following command:

echo "Types: deb
URIs: https://packages.microsoft.com/repos/azure-cli/
Suites: noble
Components: main
Architectures: $(dpkg --print-architecture)
Signed-by: /etc/apt/keyrings/microsoft.gpg" | sudo tee /etc/apt/sources.list.d/azure-cli.sources

But: my system is Questing, so I should not be forced to install the CLI for an older version, and hope that everything is compatible.

Additional context

Support for the next release (26.04, Resolute Raccoon) was already requested here: #33282

[yonzhan]

Thank you for opening this issue, we will look into it.

[github-actions]

Here are some similar issues that might help you. Please check if they can solve your problem.

• Support Ubuntu 26.04 LTS ("Resolute Raccoon") in CLI #33282
• Add support for Ubuntu 20.04 (Focal Fossa) release #13081

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Possible solution (Extracted from existing issue, might be incorrect; please verify carefully)

Solution 1:

Manually override the installer script to use a supported Ubuntu release version (e.g., 'noble' for Ubuntu 24.04) in the repository configuration. For example:

echo "Types: deb
URIs: https://packages.microsoft.com/repos/azure-cli/
Suites: noble
Components: main
Architectures: $(dpkg --print-architecture)
Signed-by: /etc/apt/keyrings/microsoft.gpg" | sudo tee /etc/apt/sources.list.d/azure-cli.sources

Solution 2:

Use a workaround to modify the installer script to hardcode a supported package source and create a symbolic link for missing dependencies if necessary. For example:

# Override the installer script to hardcode a supported package source:
curl -sL https://aka.ms/InstallAzureCLIDeb | sed 's/${CLI_REPO}/eoan/g;' | bash;

# Add a symlink to make it appear that a required library is installed:
cd /lib/x86_64-linux-gnu;
ln -s libffi.so.7.1.0 libffi.so.6;

Reference:

• Add support for Ubuntu 20.04 (Focal Fossa) release #13081 (comment)
• Add support for Ubuntu 20.04 (Focal Fossa) release #13081 (comment)
• Add support for Ubuntu 20.04 (Focal Fossa) release #13081 (comment)

Solution 3:

Consider using a Python virtual environment and installing the Azure CLI via pip as an alternative to avoid issues with the repository configuration. For example:

pip install azure-cli

This allows you to run az commands within the virtual environment.

Reference:

• Add support for Ubuntu 20.04 (Focal Fossa) release #13081 (comment)

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