Link to analysis of possible issues with EXE custom actions in Windows Installer

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Robert Flaming has posted a helpful analysis of the issues that need to be considered when using EXEs in Windows Installer custom actions.  You can find this analysis at https://blogs.msdn.com/windows_installer_team/archive/2007/10/20/integration-hurdles-for-exe-custom-actions.aspx.

If you are working on a Windows Installer-based setup and are considering whether to write an EXE or a DLL for a custom action in your package, I encourage you to review this list of issues and test scenarios to familiarize yourself with some of the issues that can affect EXE custom actions.