I have a request from my QA team to be able to uninstall the product from the command line using Msiexec in an easy and consistent manner (IOW, without a constant changing product code). I looked
here and
here.
Long story short, this works:
To eliminate all the other thrash, I took our {GUID} key in Uninstall; exported it; changed the GUID to 'foo'; and then imported the new key.
But this does not:
I get the error "The installation package could not be opened. Verify that the package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer package."
Is it possible to do what we are trying to do?