Ben Hillis d7828e8d84 Release COM DLLs before installer test MSI operations (#40093) ...

* Release COM DLLs before installer test MSI operations

Add PrepareForMsiOperation() that calls CoFreeUnusedLibrariesEx(0)
before each msiexec invocation. This releases in-process COM DLLs
like wslserviceproxystub.dll loaded by prior test classes, preventing
the Restart Manager from detecting the test process as holding file
locks and failing the install on older Server SKUs like ni_release.

* fix CoFreeUnusedLibrariesEx

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Co-authored-by: Ben Hillis <benhill@ntdev.microsoft.com>

2026-04-03 11:15:49 -07:00

44 KiB

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