[Ubuntu] ubuntu-latest label will use Ubuntu 26.04 in November 2026 #14748

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1. v-AndriiKhyliuk

   self-assigned this

   on Sep 17, 2026
2. v-AndriiKhyliuk

   added

   OS: Ubuntu

   Announcement

   Area: Image management

   on Sep 17, 2026
3. v-AndriiKhyliuk

   changed the title [-][Ubuntu] ubuntu-latest label will use Ubuntu 26.04 in November 2026[/-] [+][Ubuntu] `ubuntu-latest` label will use Ubuntu 26.04 in November 2026[/+] on Sep 17, 2026
4. v-AndriiKhyliuk

   pinned this issue on Sep 17, 2026
5. arichesson commented on Sep 18, 2026

   

   arichesson

   on Sep 18, 2026

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   Any way to turn this warning off? It's cluttering the pipeline warning logs

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8. miracle091

   added a commit that references this issue on Sep 18, 2026

   ci: fissa i runner a ubuntu-24.04 invece di ubuntu-latest

   ...

   9839527
9. manishlak commented on Sep 18, 2026

   

   manishlak

   on Sep 18, 2026

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   i have a question here, existing build/release pipelines (including yml) using ubuntu-latest, do need to update the specific to Ubuntu 26.04 or it will take auto place?

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11. johann-b82

    added a commit that references this issue on Sep 18, 2026

    chore(ci): Runner auf ubuntu-24.04 festnageln (#127)

    ...

    8487241
12. manishlak commented on Sep 18, 2026

    

    manishlak

    on Sep 18, 2026

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    i have a question here, existing build/release pipelines (including yml) using ubuntu-latest, do need to update the specific to Ubuntu 26.04 or it will take auto place?

    Ubuntu-latest will auto update to Ubuntu 26.04

    

    hope i'm in right direction, mean in pipeline this Agent Specification will be auto update (ubuntu-latest to ubuntu-26.04), no manual update our side

    

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13. saidulmiah8034-wq commented on Sep 18, 2026

    

    saidulmiah8034-wq

    on Sep 18, 2026

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    Breaking changes

    The ubuntu-latest label is ready to become the default version for Ubuntu 26.04.

    Target date

    This change will be rolled out over a period of several weeks beginning October 19, 2026. We plan to complete the migration by November 19, 2026.

    The motivation for the changes

    Ubuntu 26.04 has completed its public preview period and is generally available for production workloads. We have monitored customer feedback and image stability, and are now ready to set it as the latest version for the x64 ubuntu-latest label.

    Possible impact

    Workflows and pipelines that depend on Ubuntu 24.04-specific software, package versions, system libraries, compilers, or prebuilt binaries may be affected.

    Software difference between Ubuntu 24.04 and Ubuntu 26.04

    Tool name Ubuntu 24.04 Ubuntu 26.04 Notes
    Operating system Ubuntu 24.04.5 LTS Ubuntu 26.04.1 LTS New Ubuntu LTS release
    Kernel 6.17.0-1022-azure 7.0.0-1012-azure Updated with the new operating system
    Systemd 255.4-1ubuntu8.17 259.5-0ubuntu3.4 Updated with the new operating system
    Docker Buildx 0.37.0 0.37.0 Available on both images
    Minikube 1.39.0 1.39.0 Available on both images
    AWS CLI 2.36.40 2.36.40 Available on both images
    Azure CLI 2.90.0 2.90.0 Available on both images
    Google Cloud CLI 583.0.0 583.0.0 Available on both images
    Rust 1.98.1 1.98.1 Available on both images
    Firefox 155.0 155.0 Available on both images
    Java 17.0.20+1 (default) 17.0.20+1 (default) Default version remains Java 17
    For the complete list of installed software, see the Ubuntu 26.04 image documentation.

    Platforms affected

    • Azure DevOps[x] GitHub Actions

    Runner images affected

    • Ubuntu 22.04[ ] Ubuntu 22.04 Arm64[x] Ubuntu 24.04[ ] Ubuntu 24.04 Arm64[x] Ubuntu 26.04[ ] Ubuntu 26.04 Arm64[ ] Ubuntu Slim[ ] macOS 14[ ] macOS 14 Arm64[ ] macOS 15[ ] macOS 15 Arm64[ ] macOS 26[ ] macOS 26 Arm64[ ] Windows Server 2022[ ] Windows Server 2025[ ] Windows Server 2025 with Visual Studio 2026[ ] Windows Desktop 11[ ] Windows Desktop 11 with Visual Studio 2026

    Mitigation ways

    If you see any issues with your workflows during this transition period:

    • File an issue in this repository.
    • Switch back to Ubuntu 24.04 by specifying the ubuntu-24.04 label.
    • Use ubuntu-26.04 to test against the new image explicitly.

    What poblem

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15. Ashe150 commented on Nov 10, 2026

    

    Ashe150

    on Nov 10, 2026

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    Maybe, if possible. Also maintenance reasons for these?

    The question is ?
16. UserArham commented on Nov 11, 2026

    

    UserArham

    on Nov 11, 2026

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    nevermind. welp, latest ruby gem is removed and julia/miniconda is also removed which is totally ragebait for ubuntu 26.04.
17. jawherbarhoumi669-dotcom commented on Nov 11, 2026

    

    jawherbarhoumi669-dotcom

    on Nov 11, 2026

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    check
18. jawherbarhoumi669-dotcom commented on Nov 11, 2026

    

    jawherbarhoumi669-dotcom

    on Nov 11, 2026

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    /check
19. rstevens011 commented on Nov 11, 2026

    

    rstevens011

    on Nov 11, 2026

    Last edited by rstevens011

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    With enforce mode enabled in 26.04, AppArmor blocks tshark from using custom dissector plugins. I cut a bug to AppArmor already: https://bugs.launchpad.net/apparmor/+bug/2173933, since they maintain the rule-set for tshark.
20. Ashe150 commented on Nov 12, 2026

    

    Ashe150

    on Nov 12, 2026

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    With enforce mode enabled in 26.04, AppArmor blocks tshark from using custom dissector plugins. I cut a bug to AppArmor already: https://bugs.launchpad.net/apparmor/+bug/2173933, since they maintain the rule-set for tshark.

    The workaround is

    - name: Allow tshark to read files under $HOME (Ubuntu 26.04 AppArmor)
      run: |
        if [ -f /etc/apparmor.d/tshark ]; then
          echo 'owner @{HOME}/** mr,' | sudo tee /etc/apparmor.d/local/tshark
          sudo apparmor_parser -r -W /etc/apparmor.d/tshark
        fi
21. praphull-purohit commented on Nov 12, 2026

    

    praphull-purohit

    on Nov 12, 2026

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    The notice we see in our pipelines is misleading, considering it's November already.

    The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748

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22. princess38827 commented on Nov 14, 2026

    

    princess38827

    on Nov 14, 2026

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    Breaking changes

    The ubuntu-latest label is ready to become the default version for Ubuntu 26.04.

    Target date

    This change will be rolled out over a period of several weeks beginning October 19, 2026. We plan to complete the migration by November 19, 2026.

    The motivation for the changes

    Ubuntu 26.04 has completed its public preview period and is generally available for production workloads. We have monitored customer feedback and image stability, and are now ready to set it as the latest version for the x64 ubuntu-latest label.

    Possible impact

    Workflows and pipelines that depend on Ubuntu 24.04-specific software, package versions, system libraries, compilers, or prebuilt binaries may be affected.

    Software difference between Ubuntu 24.04 and Ubuntu 26.04

    Tool name Ubuntu 24.04 Ubuntu 26.04 Notes
    Operating system Ubuntu 24.04.5 LTS Ubuntu 26.04.1 LTS New Ubuntu LTS release
    Kernel 6.17.0-1022-azure 7.0.0-1012-azure Updated with the new operating system
    Systemd 255.4-1ubuntu8.17 259.5-0ubuntu3.4 Updated with the new operating system
    Docker Buildx 0.37.0 0.37.0 Available on both images
    Minikube 1.39.0 1.39.0 Available on both images
    AWS CLI 2.36.40 2.36.40 Available on both images
    Azure CLI 2.90.0 2.90.0 Available on both images
    Google Cloud CLI 583.0.0 583.0.0 Available on both images
    Rust 1.98.1 1.98.1 Available on both images
    Firefox 155.0 155.0 Available on both images
    Java 17.0.20+1 (default) 25.0.5+8 (default) Default version updated to Java 25
    For the complete list of installed software, see the Ubuntu 26.04 image documentation.

    Platforms affected

    • Azure DevOps[x] GitHub Actions

    Runner images affected

    • Ubuntu 22.04[ ] Ubuntu 22.04 Arm64[x] Ubuntu 24.04[ ] Ubuntu 24.04 Arm64[x] Ubuntu 26.04[ ] Ubuntu 26.04 Arm64[ ] Ubuntu Slim[ ] macOS 14[ ] macOS 14 Arm64[ ] macOS 15[ ] macOS 15 Arm64[ ] macOS 26[ ] macOS 26 Arm64[ ] Windows Server 2022[ ] Windows Server 2025[ ] Windows Server 2025 with Visual Studio 2026[ ] Windows Desktop 11[ ] Windows Desktop 11 with Visual Studio 2026

    Mitigation ways

    If you see any issues with your workflows during this transition period:

    • File an issue in this repository.
    • Switch back to Ubuntu 24.04 by specifying the ubuntu-24.04 label.
    • Use ubuntu-26.04 to test against the new image explicitly.

    Breaking changes

    The ubuntu-latest label is ready to become the default version for Ubuntu 26.04.

    Target date

    This change will be rolled out over a period of several weeks beginning October 19, 2026.
    We plan to complete the migration by November 19, 2026.

    The motivation for the changes

    Ubuntu 26.04 has completed its public preview period and is generally available for production workloads.
    We have monitored customer feedback and image stability, and are now ready to set it as the latest version for the x64 ubuntu-latest label.

    Possible impact

    Workflows and pipelines that depend on Ubuntu 24.04-specific software, package versions, system libraries, compilers, or prebuilt binaries may be affected.

    Software difference between Ubuntu 24.04 and Ubuntu 26.04

    Tool name	Ubuntu 24.04	Ubuntu 26.04	Notes
    Operating system	Ubuntu 24.04.5 LTS	Ubuntu 26.04.1 LTS	New Ubuntu LTS release
    Kernel	6.17.0-1022-azure	7.0.0-1012-azure	Updated with the new operating system
    Systemd	255.4-1ubuntu8.17	259.5-0ubuntu3.4	Updated with the new operating system
    Docker Buildx	0.37.0	0.37.0	Available on both images
    Minikube	1.39.0	1.39.0	Available on both images
    AWS CLI	2.36.40	2.36.40	Available on both images
    Azure CLI	2.90.0	2.90.0	Available on both images
    Google Cloud CLI	583.0.0	583.0.0	Available on both images
    Rust	1.98.1	1.98.1	Available on both images
    Firefox	155.0	155.0	Available on both images
    Java	17.0.20+1 (default)	25.0.5+8 (default)	Default version updated to Java 25

    For the complete list of installed software, see the Ubuntu 26.04 image documentation.

    Platforms affected

    • Azure DevOps
    • GitHub Actions

    Runner images affected

    • Ubuntu 22.04
    • Ubuntu 22.04 Arm64
    • Ubuntu 24.04
    • Ubuntu 24.04 Arm64
    • Ubuntu 26.04
    • Ubuntu 26.04 Arm64
    • Ubuntu Slim
    • macOS 14
    • macOS 14 Arm64
    • macOS 15
    • macOS 15 Arm64
    • macOS 26
    • macOS 26 Arm64
    • Windows Server 2022
    • Windows Server 2025
    • Windows Server 2025 with Visual Studio 2026
    • Windows Desktop 11
    • Windows Desktop 11 with Visual Studio 2026

    Mitigation ways

    If you see any issues with your workflows during this transition period:

    • File an issue in this repository.
    • Switch back to Ubuntu 24.04 by specifying the ubuntu-24.04 label.
    • Use ubuntu-26.04 to test against the new image explicitly.
23. z4hz4sw9n2-byte commented on Nov 15, 2026

    

    z4hz4sw9n2-byte

    on Nov 15, 2026

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    hynmkjj
24. sohailimranss902-create commented on Nov 15, 2026

    

    sohailimranss902-create

    on Nov 15, 2026

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    Bb
25. UserArham commented on Nov 15, 2026

    

    UserArham

    on Nov 15, 2026

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    Linux runner images is always affected, or is it? I have a Chromebook; it's linux, but I wanna see if it works
26. edmorley commented on Nov 15, 2026

    

    edmorley

    on Nov 15, 2026

    Last edited by edmorley

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    The switch of ubuntu-latest to ubuntu-26.04 broke some of our environments since the Docker 29 version in the new images:
    (a) defaults to the containerd image store, and
    (b) is not the latest Docker 29.x so is missing some upstream Moby bug fixes needed for containerd mode to actually be usable

    Please can you update the Docker version in ubuntu-26.04 to pick up the missing upstream bug fixes? (I've opened a PR)

    See:

    • [Ubuntu 26.04] Update Docker to 29.9.x to fix containerd image store bugs (incomplete images after pull) #15330
    • Update Docker to 29.9.3 on Ubuntu 26.04 and Windows #15332
27. Ashe150 commented on Nov 15, 2026

    

    Ashe150

    on Nov 15, 2026

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    The switch of ubuntu-latest to ubuntu-26.04 broke some of our environments since the Docker 29 version in the new images: (a) defaults to the containerd image store, and (b) is not the latest Docker 29.x so is missing some upstream Moby bug fixes needed for containerd mode to actually be usable

    Please can you update the Docker version in ubuntu-26.04 to pick up the missing upstream bug fixes? (I've opened a PR)

    See:

    • [Ubuntu 26.04] Update Docker to 29.9.x to fix containerd image store bugs (incomplete images after pull) #15330
    • Update Docker to 29.9.3 on Ubuntu 26.04 and Windows #15332

    For the (a) on #15233 (comment) they said We'll also consider/discuss whether 26.04 should ship with the old Docker storage turned back on.
28. edmorley commented on Nov 15, 2026

    

    edmorley

    on Nov 15, 2026

    Last edited by edmorley

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    We're fine with containerd image store being enabled by default, so long as the images aren't using an out of date Docker from May 2026. (Also, in our new LLM-assisted CVE world, not updating security-critical tools like Docker for that long isn't ideal IMO).
29. Ashe150 commented on Nov 15, 2026

    

    Ashe150

    on Nov 15, 2026

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    We're fine with containerd image store being enabled by default, so long as the images aren't using an out of date Docker from May 2026. (Also, in our new LLM-assisted CVE world, not updating security-critical tools like Docker for that long isn't ideal IMO).

    For the Docker they started to update it to fix #14554 only remains Ubuntu.