ubuntu-latest is failing

[bcardarella]

Description

I have the following:

runs-on: ubuntu-latest

And I get this error now, GA was running prefectly fine yesterday:

Tried to map a target OS from env. variable 'ImageOS' (got ubuntu24), but failed. If you're using a self-hosted runner, you should set 'env': 'ImageOS': ... to one of the following: ['ubuntu18', 'ubuntu20', 'ubuntu22', 'win19', 'win22']

I tried changing it to the explicit ubuntu-24.04 but i get the same error.

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 20.04
• Ubuntu 22.04
• Ubuntu 24.04
• macOS 13
• macOS 13 Arm64
• macOS 14
• macOS 14 Arm64
• macOS 15
• macOS 15 Arm64
• Windows Server 2019
• Windows Server 2022
• Windows Server 2025

Image version and build link

Ubuntu-Latest / Ubuntu-24.04

Is it regression?

Maybe?

Expected behavior

It should not fail for this version of Ubuntu

Actual behavior

Tried to map a target OS from env. variable 'ImageOS' (got ubuntu24), but failed. If you're using a self-hosted runner, you should set 'env': 'ImageOS': ... to one of the following: ['ubuntu18', 'ubuntu20', 'ubuntu22', 'win19', 'win22']

Repro steps

ci.yml:

runs-on: ubuntu-latest

[Prabhatkumar59]

Hi @bcardarella - Thank you for bringing this issue to our attention. We will look into this issue and will update you after investigating.