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InstallShield 2009 Premier, Basic MSI project

  1. I have installed the setup, its installed.
  2. I replaced a dll with a newer one and again prepared the setups(didn't change product code or any other code)
  3. Now running the new setups, it asks for upgrade
  4. I choose upgrade but after completing the setup I notice the dll is not replaced !!!

why and How to solve this?

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1 Answer 1

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Did you change the file version of the newer dll to be a higher version than the previous dll? The new dll has to be versioned higher than the older one in order to be replaced.

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Updating the version is the right way to do it. Another way is to set REINSTALLMODE to emus instead (replace files with same version) of the normal omus (replace files with lower version only). Do not use amus which replaces any file. This could cause downgrade system files on older versions of Windows or trigger a file protection error on newer versions of Windows (files coming from merge modules etc...).

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