Code | Installshield Product

InstallShield provides several methods to manage this GUID.

For minor updates/patches:

If you inherit an old project or need to troubleshoot a client's machine, here is how to find the Product Code of an installed application.

Definition: A major upgrade is a complete replacement of the older product. It typically involves a new Product Code and often a new directory structure, component IDs, or registry layout. installshield product code

When to do it:

How to implement in InstallShield: Go to Project > InstallShield MSI Project > General Information > Product Code and click "New GUID." Then navigate to Media > Releases > Upgrades and create a new upgrade item. Set "Detected product code" to the old version's Product Code. InstallShield provides several methods to manage this GUID

| Aspect | Detail | |--------|--------| | Purpose | Identifies the product for Windows Installer | | Change required? | For major upgrades only (not minor updates or patches) | | Location in IDE | General Information > Product Code | | Related codes | Upgrade Code (permanent, identifies product family)
Package Code (changes with every build) |

In InstallShield Professional or Premier: For minor updates/patches:

Result: 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.

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