I'm using an external UI to chain several msi files together. I have an
ExternalUIHandler that is part of a WPF MVVM wizard application. Most of the
msi files are 32bit ("Intel" platform) but one of them is a 64 bit ("x64"
platform, let's call it "my-x64.msi") that contains both 32-bit and 64-bit
components. The wizard app checks the operating system bitness and then makes
a list of the msi files that will be installed, so that the x64 msi is only
installed when running on a 64-bit OS.
When I run the my-x64.msi by itself, the 64-bit components are correctly
installed into C:\Program Files\... and the 32-bit components are installed
into C:\Program Files (x86)\... However, when my-x64.msi is installed by the
External UI, the Windows Installer service treats it like a 32-bit MSI and
WIN64DUALFOLDERS hoses all components using ProgramFiles64Folder, so I end up
with all components in the C:\Program Files (x86)\... folder.
>From the MSI log when using the External UI:
MSI (s) (9C:00) [16:00:24:038]: WIN64DUALFOLDERS: 'C:\Program Files (x86)\'
will substitute 17 characters in 'C:\Program Files\' folder path. (mask
argument = 0, the folder pair's iSwapAttrib member = 0).
In the External UI, I'm using
var installTransaction = new Transaction("myInstallTransaction",
TransactionAttributes.None);
to start a muti-package transaction. After that I'm using
Installer.InstallProcut(pathToMsiString, propertiesString);
for every MSI file, followed by
installTransaction.Rollback();
if any InstallProduct() call fails or is cancelled, or
installTransaction.Commit();
if they are all successful. Am I missing something else here? Or have I
stumbled upon a bug in DTF?
Thanks,
Douglas M.
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