Installshield Product - Code

The Product Code should generally remain the same across different languages of the same product version, but it must change for major upgrades. The Package Code, however, must be unique for every single .msi file you generate. If you rebuild an installer without changing the Package Code, Windows Installer may treat it as the exact same file, causing cache issues.

Without a Product Code, the Windows Installer service would be unable to determine if a product is already installed, preventing it from managing upgrades or uninstallations. installshield product code

InstallShield provides several methods to generate and manage the Product Code. The Product Code should generally remain the same