Product Code InstallShield is a unique GUID (Globally Unique Identifier) that acts as the "fingerprint" for a specific version of your application. Changing it is the primary way Windows Installer identifies a Major Upgrade vs. a minor update.
: When performing a "Major Upgrade," the installer uses the new Product Code to signal that it is a distinct, newer release that should replace the existing one. installshield product code
At its core, the is a GUID (e.g., AC76BA86-7AD7-1033-7B44-A94000000001 ) that uniquely identifies an application suite or product. Product Code InstallShield is a unique GUID (Globally
: It is typically formatted as a Registry Summary Property, appearing as a string of hexadecimal characters inside curly braces (e.g., 12345678-1234-1234-1234-1234567890AB ). Product vs. Upgrade Code : The Product Code changes with each version. the is a GUID (e.g.