[All OSs] .NET 3.1 will be removed from the images on July, 3

[mikhailkoliada]

Breaking changes

All the pre-cached .NET 3.1 versions will be removed from all operating systems.

Target date

The rollout will start on July, 3 and will take 3-4 days to propagate the image to all the environments.

The motivation for the changes

According to our Software and image guidelines tools and versions have to be removed 6 months after they are deprecated or have reached end-of-life. The .NET 3.1 has reached EOL on 13 December 2022.

Possible impact

If your project depends on a pre-installed .NET 3.1 it can be broken.

Platforms affected

• Azure DevOps
• GitHub Actions

Runner images affected

• Ubuntu 20.04
• Ubuntu 22.04
• macOS 11
• macOS 12
• macOS 13
• Windows Server 2019
• Windows Server 2022

Mitigation ways

To install any version in runtime you can use the following action\task:

https://github.com/actions/setup-dotnet for GH actions
https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/tool/dotnet-core-tool-installer?view=azure-devops task for AzDO

[wsmelton]

The .NET 3.1 has reached EOL on 13 December 2023.

Should read as:

The .NET 3.1 has reached EOL on 13 December 2022.

[erik-bershel]

All the images rolled out.