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How can I update the Windows installer from MSI (using WiX)? Is it possible?

I currently have a .exe that loads a bunch of prerequisites (NET3.5, hotfixes, ...), including upgrades to Windows Installer (I need 3.1), and then finally launches my msi.

I would like to switch this to have a .msi that does everything and invokes an inline binary for each prereq. Hopefully this will be less error prone and I can better integrate the interface.

Before I begin to dive into this, does anyone know if this is possible and / or a good idea? I think run msi, and if the installer version is too low, update it and use customaction return = "asyncNoWait" to run the new installed version on the same msi.

I am new to installers, so any advice is welcome.

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Found a few other depressing SO questions .

Unable to execute. So sad.

UPDATE: WIX 3.6 (currently in beta) has Burn! WIN! http://wix.sourceforge.net/downloadv36.html

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Try dotNetInstaller to do a dependency check and install a Windows Installer update before starting MSI.

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