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\->Windows Installer FAQ (the basics)->Dual Purpose Packages

Windows Installer Basics: Dual Purpose Packages

A Dual Purpose Package (DPP) uses Single Package Authoring to create a package that can install per-user or per-machine.

In Windows 7 onwards the "MSIINSTALLPERUSER" propery and other Windows Installer 5.0+ enhancements makes this a relatively simple process but this will be more completed in prior operating systems as shown in the "TryMeDualPurposePackage-SupportsWinXP.MM" example.

Prior to Windows Installer 5.0 properties such as "ProgramFilesFolder" always pointed to per-machine locations even when installing per-user and so these can't be used when supporting older operating systems.

This is some Microsoft documentation on Single Package Authoring, some other links:

Microsoft awarded me an MVP (Most Valuable Professional award) in 2004, 2005, 2006, 2007, 2008 & 2009 for the Windows SDK (Windows Installer) area.Please email me any feedback, additional information or corrections.
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Microsoft awarded me an MVP (Most Valuable Professional award) in 2004, 2005, 2006, 2007, 2008 & 2009 for the Windows SDK (Windows Installer) area.