Installshield Product Code

Windows stores uninstallation data in the registry. Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall Look through the subkeys (which are named after the Product Codes) to find the one matching your software's DisplayName . Rules for Changing the Product Code

Browse through the subkeys named with GUIDs. Look at the DisplayName property inside each key to find your software. The name of the registry key itself is the Product Code. 4. Using PowerShell

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

At runtime, the installer checks this code to determine if the product is already installed on the system.

When you create a new project, InstallShield automatically generates a random Product Code for you. Many developers mistakenly assume that InstallShield will manage this code forever. It will not. You are responsible for updating it when required. Windows stores uninstallation data in the registry

is what Windows Installer uses to distinguish between different "Major" versions. The Golden Rule: Upgrade vs. Update

Understanding the InstallShield Product Code: The Ultimate Guide Look at the DisplayName property inside each key

The upgrade went live that afternoon. Thousands of servers updated silently, and not a single user noticed the 38 characters that had nearly brought the company to a standstill.

For beginners using the wizard:

Identifies a specific installation package file (.msi). Every single time you build your installer, even if no code changed, InstallShield generates a new Package Code. No two MSI files should ever share the same Package Code. Why the Product Code Matters