Restrict __PSLockdownPolicy test hook to DEBUG builds only#26721
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Restrict __PSLockdownPolicy test hook to DEBUG builds only#26721
__PSLockdownPolicy test hook to DEBUG builds only#26721Conversation
Co-authored-by: TravisEz13 <10873629+TravisEz13@users.noreply.github.com>
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[WIP] Make PSLockdownpolicy work only in debug build
Restrict Jan 23, 2026
__PSLockdownPolicy test hook to DEBUG builds only
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The
__PSLockdownPolicyenvironment variable is an internal test hook for constrained language mode testing that was available in all builds. This restricts it to DEBUG builds and adds visibility when used.Changes
wldpNativeMethods.cs: Wrapped environment variable check in
#if DEBUGpreprocessor directive__PSLockdownPolicy environment variable detected. This is a test hook and should not be used in production.HelpersSecurity.psm1: Wrapped test cmdlet
SetLockdownMode/RevertLockdownModein#if DEBUGInvalidOperationExceptionwith clear error messageBehavior
DEBUG builds: Feature works as before, plus ETW warning logged
RELEASE builds: Environment variable ignored, test cmdlet throws exception
Impact
Existing tests continue to pass in DEBUG builds. In RELEASE builds, tests using this feature will fail with informative error messages (intended behavior - these are DEBUG-only tests).
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