Backport #51558: Fix VS rejecting preview SDKs on Helix test machines - #51628
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nagilson merged 2 commits intoNov 10, 2025
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Backport #51558: Fix VS rejecting preview SDKs on Helix test machines#51628nagilson merged 2 commits intorelease/8.0.1xxdotnet/sdk:release/8.0.1xxfrom copilot/backport-release-fix-to-8-0-1xxdotnet/sdk:copilot/backport-release-fix-to-8-0-1xxCopy head branch name to clipboard
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Co-authored-by: nagilson <23152278+nagilson@users.noreply.github.com>
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[WIP] Backport release fix to version 8.0.1xx
Backport #51558: Fix VS rejecting preview SDKs on Helix test machines
Nov 7, 2025
nagilson
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Nov 7, 2025
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November 7, 2025 23:38
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This was referenced Feb 12, 2026
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VS Release instances reject preview SDKs by default, causing MSBuild SDK resolver failures during Helix testing. This backports the fix from #51558 to release/8.0.1xx.
Changes
eng/enable-preview-sdks.ps1(new): Locates VS installations and setsUsePreviews=Truein the instance-specificsdk.txtconfiguration file. Preserves existing settings.build/RunTestsOnHelix.cmd: Invokes the preview SDK enablement script before test execution on Helix machines.eng/common/tools.ps1: Adds null safety toLocateVisualStudio()whenglobal.jsonlacks atools.vssection, preventing failures in repositories without VS requirements.The script targets the VS-versioned LocalAppData directory:
Resolves #51525 for 8.0.1xx release branch.
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