Installshield Product Code Instant

If you are taking over a legacy project and don't know the Upgrade Code, there is a fallback. Go to > Upgrade Items > General .

You change the Product Code but . Users install v2.0. They now have both v1.0 and v2.0 on their machine. When they uninstall v2.0, v1.0 remains. When they uninstall v1.0, v2.0 breaks because shared components are removed. installshield product code

: If two versions of a product have the same Product Code, Windows treats them as the same entity. Changes to the Product Code are typically required for "Major Upgrades" to allow the installer to recognize the new version as a replacement for the old one. If you are taking over a legacy project