Migrate to .NET 10 GA

[Copilot]

Updates the repository to use .NET 10 GA (10.0.100) released Nov 11, 2025. Removes all preview/RC configurations and promotes net10.0 to production target framework.

Configuration Changes

• global.json: SDK 10.0.100, allowPrerelease: false, rollForward: latestFeature
• Directory.Build.props:
  • Promote net10.0 to main TargetFrameworks (no longer conditional)
  • Update all package versions from RC (10.0.0-rc.1.25451.107) to GA (10.0.0)
  • Remove preview suppressions (SuppressNETCoreSdkPreviewMessage, NU5104, CheckEolTargetFramework)

Workflow Updates

• GitHub Actions (dotnetcore.yml, aot-check.yml, codeql-analysis.yml):

  • Set TargetNetNext: 'False'
  • Update to actions/setup-dotnet@v5 with dotnet-version: 10.0.x
  • Remove conditionals and continue-on-error from .NET 10 steps

• Azure Pipelines (template-install-dependencies.yaml):

  • Remove explicit .NET 10 RC install task (now uses global.json)

Package Versions

All .NET 10 runtime packages now use exact GA versions:

• NetTenRuntimeVersion: 10.0.0
• AspNetCoreTenRuntimeVersion: 10.0.0
• All Microsoft.Extensions.* and System.* packages: 10.0.0

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[Feature Request] Update to .NET 10 GA</issue_title>
<issue_description>This should be done after Nov 11 when .NET 10 GA is released.

.NET 10 can be downloaded from here.

To-do:

• Verify and update to make sure build files reference and install the .NET 10 GA. Update the global.json to reference .NET 10.0.100.
• If global.json doesn't exist add it. Use https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/blob/dev/global.json as a reference.
• In global.json, set allowPrerelease to false; rollForward to latestFeature.
• Remove specific .NET 10 install tasks in YAML.
• Promote net10 TFM from TargetNetNext TargetFrameworks element to the GA TargetNetNext in projects.
• The element that specified target frameworks with a TargetNetNext condition should be empty.
• Update any package dependencies to reference .NET 10 with an exact version (no wildcard package versions).
• Resolve any new analyzer warnings and errors.
• Confirm net10 binaries are created when testing locally or in the build pipeline.
• Confirm all tests pass, including .NET 10 ones.
• Check .NET 10 breaking changes for breaking changes in .NET 10 since the latest version that we use and update the code accordingly.
• Remove any appropriate warnings (like NU5104) and elements like SuppressNETCoreSdkPreviewMessage and CheckEolTargetFramework since we shouldn't be referencing any preview packages now.
• Update actions/checkout and actions/setup-dotnet to v5.
• Set TargetNetNext variable to false by default.

See #3449 as a reference for what changes were done to enable .NET 10 preview version and see if anything else that needs to be done that wasn't mentioned above.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [Feature Request] Update to .NET 10 GA #3538

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.