New subject: [Bug 58577] MsiGetComponentPath/MsiLocateComponent doesn't resolve a reference to .NET GAC

7 Aug 2025

      http://bugs.winehq.org/show_bug.cgi?id=58577

            Bug ID: 58577
           Summary: MsiGetComponentPath/MsiLocateComponent doesn't resolve
                    a reference to .NET GAC
           Product: Wine
           Version: 10.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msi
          Assignee: wine-bugs(a)winehq.org
          Reporter: peathot(a)hotmail.com
      Distribution: ---

Created attachment 79090
  --> http://bugs.winehq.org/attachment.cgi?id=79090
Test application source code

Attached is a very simple program which call `MsiLocateComponentW()` to look
for an MSI component  which is a .NET assembly from Microsoft ReportViewer 2010
runtime. Under Windows 11, it produces the following output:

MsiLocateComponentW(...) returns 3
Returned path (119):
C:\WINDOWS\assembly\GAC_MSIL\Microsoft.ReportViewer.Common\10.0.0.0__b03f5f7f11d50a3a\Microsoft.ReportViewer.Common.dll

However, on Wine, it produces this instead:

MsiLocateComponentW(...) returns 2
Returned path (158):
<\Microsoft.ReportViewer.Common,version="10.0.0.0",publicKeyToken="b03f5f7f11d50a3a",proce
ssorArchitecture="MSIL",fileVersion="10.0.30319.1",culture="neutral"

(3 = INSTALLSTATE_LOCAL, 2 = INSTALLSTATE_ABSENT)

Looking into the registry of both Windows 11 and Wine, the output of Wine is
how it's stored in registry. So Windows must have an additional step which
resolve this format of reference into a path in .NET GAC.

This is stumbled upon during a research about how `MsiProvideAssembly[A|W]()`
can be implemented. I'll file another issue about that.

Microsoft ReportViewer 2010 runtime is obtained from
https://www.hygeia-pharmacy.com/sources/reportviewer.zip [1]. The sha256sum of
the _extracted_ file is:

sha256sum ReportViewer.exe 
e8ff182e202b321ac2b9245ee20c4eb659008ffb2a34cdbd3486f9da3d4c3e06 
ReportViewer.exe

Once obtained, run the installer under a clean WINEPREFIX, then run my test
program. The test program's source code is attached, as well as a precompiled
version (for convenience). The full output with Wine's fixme's is also
attached. On Windows 11, the pasted output consists of the entirety of the
output.

[1]: yes, it's non-Microsoft link. For some reason I can't find this exact file
on Microsoft website. If you prefer that this file be downloaded from Microsoft
instead, I can find another version of this file from
https://www.microsoft.com/en-in/download/details.aspx?id=27231 (you only need
reportviewer.exe). The output of the program will be slightly different, and I
haven't tested this version on Windows 11.

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[Bug 58577] New: MsiGetComponentPath/MsiLocateComponent doesn't resolve a reference to .NET GAC

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