Setting the Upgrade Code

InstallShield 2016 Express Edition

The upgrade code is a GUID that identifies a related set of products. The Windows Installer uses a product’s upgrade code when performing major upgrades of an installed product. The upgrade code, stored in the UpgradeCode property, should remain the same for all versions of a product.

To configure the GUID for a new product, use the Upgrade Code setting in the General Information view. When you are working on an upgrade for a later version of your product, enter the same upgrade GUID in the Upgrade Paths view or in your QuickPatch project.