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Azure CLI package can't be installed on Ubuntu 26.04 - no such package in repo #34000
Description
Describe the bug
Starting 2026.08.27 official way to install Azure CLI package on Ubuntu 26.04 does not work. Looks like the package has been deleted from according repo.
Related command
apt-get install --assume-yes azure-cli
Errors
E: Unable to locate package azure-cli
Issue script & Debug output
Not applicable
Expected behavior
AzureCLI is installed.
Environment Summary
Not applicable
Additional context
Failing workflow example: https://github.com/github/hosted-runners-images/actions/runs/33018048384/job/98456480266#step:3:4091
Activity
yonzhan commentedon Aug 27, 2026
Thank you for opening this issue, we will look into it.
x-engineering-agent commentedon Aug 27, 2026
Bug Analysis
Issue:
apt-get install --assume-yes azure-clifails on Ubuntu 26.04 (codename "resolute") withE: Unable to locate package azure-cli.Root cause: This is not a defect in the Azure CLI source code. The reporter's own linked evidence shows the Microsoft APT repository (
https://packages.microsoft.com/repos/azure-cli/dists/resolute/main/binary-arm64/) does not yet have aresolute(Ubuntu 26.04) distribution published. Azure CLI is installed via a pre-built.debpackage pulled from that hosted repository, not built/packaged from anything in this GitHub repository — there is no application code change here that would add a missing distribution channel to an external package feed.Why no code fix applies: The
azure-clirepository does not control the publishing pipeline that populatespackages.microsoft.com. Addingresolutesupport requires the package-release/build pipeline (owned by the release engineering team) to publish binaries for the new Ubuntu codename, which is outside the scope of a source PR here.Recommendation: Route to the release/packaging team responsible for the
packages.microsoft.com/repos/azure-clifeed to addresolute(Ubuntu 26.04) to the list of published distributions. In the meantime, users on Ubuntu 26.04 can use the alternative install script or install viapip/pipxas a workaround.No Copilot code-fix task is being started for this issue since it is an external packaging/distribution gap, not a source-code bug.
SonnyRR commentedon Aug 27, 2026
The title of this issue is misleading, but I am also facing the same issue when building my custom
Devcontainerimage, that is based onUbuntu 26.04. Part of the baked toolchain isaz-cli, which was provisioned as expected up until today.[-]AzCopy package is missing for Ubuntu 26.04[/-][+]AzCopy package can't be installed on Ubuntu 26.04 - no such package in repo[/+]v-SergeiRadich commentedon Aug 28, 2026
Vasil Kotsev (@SonnyRR) thanks for pointing out the misleading title - I have updated it to better reflect the issue.
[-]AzCopy package can't be installed on Ubuntu 26.04 - no such package in repo[/-][+]Azure CLI package can't be installed on Ubuntu 26.04 - no such package in repo[/+]leemathewbrooks commentedon Aug 28, 2026
This is also affecting image builds from the GitHub actions runner-images repo - tests fail at the powershell-cli install stage and builds are failing.
thomas-temby commentedon Aug 31, 2026
Hi Sergei Radich (@v-SergeiRadich),
Ubuntu 26.04 is not supported for azure-cli versions 2.89.1 and earlier we are adding support in 2.90.0 which will be released tomorrow.
Unfortunately, a change required prior to the release date resulted in the install script no-longer falling back to the version of azure cli built for Ubuntu 22.04 completely blocking the install on Ubuntu 26.04 we will do our best to prevent similar issues happening in the future.
thomas-temby commentedon Sep 1, 2026
With the release of az cli 2.90.0 the installation is now functional so closing this issue