InstrallShield Major Upgrade not completely uninstalling previous version
问题 I have an InstallShield 2016 InstallScript MSI project. I used the Major Upgrade option but with that approach what I see is that files of previous version gets removed, registry entries get deleted, etc. However, the uninstallation logic that is in the InstallScript (*.rul) files does not seem to get executed and hence the uninstall of previous version is not complete. Basically, it seems Major Upgrade does not execute InstallScript code? Please advise. thanks, 回答1: Many years ago I had to