Installshield Product Code Jun 2026

You write a custom action that checks for OLD-GUID . When you change the Product Code, your script breaks. Fix: Use property references (e.g., [ProductCode] ) in InstallScript or use the MSI API to retrieve the current product code dynamically.

The Product Code was changed mid-development without setting up proper Upgrade paths, leaving Windows unable to track down or uninstall the older asset definitions.

The second install will fail with a message that the product is already installed, or it will trigger a self-repair. Fix: If you need multiple builds (e.g., Developer vs. Production), you must either use different Product Codes or use instance transforms (MSI). installshield product code

file. This often results in duplicate Product and Upgrade Codes, which can break your upgrade logic.

During a Major Upgrade, the incoming installer uses its Upgrade Code to search the target system for existing installations. Once found, it checks the old Product Code to execute a clean uninstallation of the legacy application before deploying the new version. 3. Handling Uninstallation and Patching You write a custom action that checks for OLD-GUID

If you are encountering a during deployment?

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The Product Code was changed mid-development without setting

It is vital to understand that the Windows Installer treats two products with different Product Codes as entirely unrelated, even if they have the same Product Name, are developed by the same company, and are the same version.

, which automatically handles the uninstallation of the old version and a clean install of the new one—all without the user needing to manually touch the Control Panel. Pro Tip: Automation If you’re using a CI/CD pipeline, consider using the InstallShield Automation Interface

Think of it like a Social Security Number for your software:

If your CI/CD pipeline triggers Major Upgrades frequently, use the InstallShield Automation Interface (COM) or command-line parameters ( -g flags) to programmatically generate a new Product Code during production builds.