MSI upgrade and retain registry keys?

Question

We have a product, 1.0, in the field. I am trying to update the installer for that product so it can install over the old version, to install a new version, 2.0. I\'m using a

Answer 1

It sounds like you might need to place the RemoveExistingProducts Action up in the installer sequence - perhaps to the InstallValidate action.

I am afraid I don't know how to accomplish this with Visual Studio - I use Advanced Installer because I've found it provides a much easier interface to building and managing installation packages.