Installshield Product Code [work] Jun 2026

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

| Identifier | Scope | When it changes | Used for | | :--- | :--- | :--- | :--- | | | Per-version | Every major or minor release (if new install logic is needed) | Identifying the installed instance of a product. | | Package Code | Per-build | Every single build (always) | Uniquely identifying the .MSI file itself. Do not manually change this. | | Upgrade Code | Per-product | Never (over the lifetime of the product) | Linking all versions of the same product for major upgrades. | installshield product code

Developer releases version 2.0 of "AppX" (Major Upgrade). Think of it like a Social Security Number

If you want two versions of your app (e.g., v1.0 and v2.0) to coexist on the same machine, they must have different Product Codes. | | Upgrade Code | Per-product | Never