I am developing an app in Framework 3.5. I would like Installshield to check if Framework 3.5 is already installed. If it's not installed, i want it to download it from the internet and then install it.
On my App Data -> Redistributables, I have Microsoft Framework 3.5 SP1 as a Installshield Prerqe. It is "Installed Locally" and build location "Copy from source media".
I have Framework 3.5 as required for installation.
On Windows XP, it works fine. It asks user to install Framework 3.5 if required.
On Windows 7, 8, 2008: even if Framework 3.5 is not installed. It does not ask user the download/install it. It only prompts them that the installation cannot continue because 3.5 is not installed.
Any idea on how to solve this problem ?