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User action as a 64-bit process

I have a setup designed for 64-bit platforms. In this installation, I referred to a C # custom action project that is built on 64 bit. In one of the functions, I noticed that the process is 32-bit, not 64. Why is this and how can I make it 64-bit?

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The host for your managed custom action ( SfxCA.dll ) is selected based on the $(Platform) your custom action project. You can see that the corresponding .dll is selected in wix.ca.targets . The SfxCA.dll bit SfxCA.dll will control the user action server bit. Windows Installer will automatically select the correct user action server.

So it all depends on whether your $(Platform) installed on x64 to get a 64-bit user action server.

Note. Of course, 64-bit packages can and do perform 32-bit user actions, but not vice versa.

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