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Finding currently installed MSIs

Originally posted on my old MSDN blog

I was struggling to install some new software (the superb new Live Local 3D view - I had an early internal beta already installed) and then remembered a handy tip.

To find all currently installed MSIs, use the (hidden) folder c:\windows\Installer. It gives you a nice browseable view of the current state of the system, and can be invaluable in tracking down what the system currently thinks is installed.

N.B. This blog post has now moved to