To truly master the product code, you need to move beyond the basics and understand how it interacts with other project settings and how to avoid common problems.
If a user attempts to install an MSI package on a machine where that exact Product Code is already registered, the installer drops into Maintenance Mode. This presents the user with options to Modify, Repair, or Remove the existing application rather than installing a duplicate copy. 2. Managing Major Upgrades
Navigate to the section in the left-hand View List. Click on General Information . In the middle pane, locate the Product Properties category. Find the Product Code property.
| Identifier | Purpose | When to Change | | :--- | :--- | :--- | | | Identifies a specific version of an application. | For major upgrades and patches. | | Upgrade Code | Links all versions of the same product family. | Never change this. Remains constant across all versions. | | Package Code (MSI only) | Identifies the unique .MSI file itself. | Changes every time you build. | installshield product code
This guide breaks down what the Product Code is, why it matters, how to find it, and best practices for managing it in InstallShield. What is an InstallShield Product Code?
Inside the InstallShield interface, you typically find the Product Code under the General Information Manual vs. Automatic:
The Product Code is a 128-bit hexadecimal string enclosed in curly braces (e.g., 50EFC3E0-8AF8-11D4-94C7-00E09876D9C4 ). Its primary functions include: Flexera Community Uniqueness To truly master the product code, you need
In simple terms, the is a GUID that the operating system and the Windows Installer (MSI) service use to uniquely identify your specific application. The installation process registers this GUID on the target machine at run time. This registration is what allows Windows to:
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.
You release App v1.0 (Product Code A). Later, you build App v1.1 but . Your users install v1.1. What happens? Windows Installer sees Product Code A already installed, so it enters "maintenance mode" or fails with an error. Users end up with two separate entries in Control Panel – one that works and one that is broken. In the middle pane, locate the Product Properties category
Patches allow you to update a product without changing the Product Code AND without requiring the original source media. They are the most complex but most bandwidth-friendly.
In the world of software packaging and deployment, particularly when using to create Windows Installer (MSI) packages, managing unique identifiers is crucial. Among these identifiers, the InstallShield Product Code is perhaps the most critical for maintaining product integrity, managing upgrades, and ensuring proper installation behavior on target machines.