Installshield Product Code [better] Online

The is the backbone of your installer’s identity. By understanding when to keep it and when to change it, you ensure a seamless experience for your users—from the first click of "Install" to the final "Uninstall."

If you are a system administrator trying to automate a deployment, you can find the Product Code of an already installed app using : powershell installshield product code

In InstallShield, you can set the Product Code to * or use the "Generate New GUID" button. For Major Upgrades, always ensure a new GUID is generated. The is the backbone of your installer’s identity