[Copilot]

.NET 8 approaches end of support in November 2026. Move the build and development environment to .NET 10 while preserving the existing runtime targets. Similarly the PowerShell version 7.4 and 7.5 (that uses .NET 8 and 9, respectively) go out of support so increasing minimum PowerShell version support to 7.6. It had to be 7.6.6 and not 7.6.9 because CI runners still use 7.6.6, this can be updated later closer to release time.

• SDK pin: Set global.json to .NET SDK 10.0.401, retaining feature-band roll-forward.

  {
    "sdk": {
      "version": "10.0.401",
      "rollForward": "latestFeature"
    }
  }

• Developer environment: Update the devcontainer image and label, and refresh the README SDK and Visual Studio requirements.

• Fixes Update the build to use .NET 10 #2195

[Copilot]

🟢 Approval recommended

No active review issues are reported for the .NET 10 build and development environment update.

No open issues 🎉

What changed in this PR

Updates the build and development environment to .NET 10 ahead of .NET 8’s end of support, addressing #2195 while leaving runtime targets unchanged.

Changes:

• Pins the SDK to 10.0.401, retaining latestFeature roll-forward.
• Updates the devcontainer image and display name to .NET 10.
• Refreshes README requirements to .NET 10 and Visual Studio 2026.

File	Description
README.md	Updates SDK and recommended Visual Studio requirements.
global.json	Pins the build SDK to 10.0.401.
.devcontainer/​Dockerfile	Switches the container base image to .NET 10.
.devcontainer/​devcontainer.json	Updates the container display name to .NET 10.

_{Review effort: Balanced}

[Copilot]

🟡 Changes recommended

Windows CI is failing because Microsoft.WindowsDesktop.App.Ref lacks an exact nuget.org mapping, causing version 8.0.33 to restore from the Azure feed and fail with HTTP 401.

1 open issue

• Map Microsoft.WindowsDesktop.App.Ref 8.0.33 to nuget.org · New

_{Review effort: Balanced}

[Copilot]

🟢 Approval recommended

No active review issues are recorded for the .NET 10 build and development environment update.

No open issues 🎉

1 resolved since last review

• Map Microsoft.WindowsDesktop.App.Ref 8.0.33 to nuget.org

_{Review effort: Balanced}

[Christoph Bergmeister (bergmeister)]

Copilot upgrading .NET from 8 to 10 also means upgrading the minimum supported version of PowerShell 7 version from 7.4 to 6.6 as we have tests for that in our manifest script (.psdm1 file). Please update it and other places that referenced PowerShell 7.4

[Copilot]

Copilot upgrading .NET from 8 to 10 also means upgrading the minimum supported version of PowerShell 7 version from 7.4 to 6.6 as we have tests for that in our manifest script (.psdm1 file). Please u...

Updated the module loader minimum to PowerShell 7.6.6 in b0be65a. I kept the SMA 7.4.14 reference because SMA 7.6.6 targets only net10, while this project retains its net8 target; the net8 Engine build and focused tests pass.

[Christoph Bergmeister (bergmeister)]

Copilot why not powershell 7.6.9? it's latest powershell version and by the time psscriptanalyzer releases it would've been out for long enough as guidance is to update powershell within a month after release of patch.

alos, I think we should update SMA reference and update everyting that targets net8 to net10 because net10 is implicitly the minomum .NET version due to the minimumm PowerShell 7 upgrade to 7.6

[Copilot]

Copilot why not powershell 7.6.9? it's latest powershell version and by the time psscriptanalyzer releases it would've been out for long enough as guidance is to update powershell within a month afte...

Updated to PowerShell/SMA 7.6.9 and retargeted the Engine and Rules projects plus the PowerShell 7 build selection to .NET 10.0, while retaining the net462 and netstandard2.0 targets. Changes are in 4b51b00; the full solution builds in Debug and Release.

[Christoph Bergmeister (bergmeister)]

Copilot it seems CI is still using PowerShell 7.6.6 so please lower minimum version from 7.6.9 to 7.6.6

[Copilot]

Copilot it seems CI is still using PowerShell 7.6.6 so please lower minimum version from 7.6.9 to 7.6.6

Lowered the loader minimum to PowerShell 7.6.6 in commit 97a151e and verified the version gate passes on 7.6.6.

[Copilot]

🟢 Approval recommended

No active review issues are blocking approval of the .NET 10 migration.

No open issues 🎉

_{Review effort: Balanced}