Preventing the Current Installation from Overwriting a Future Major Version of the Same Product

InstallShield 2019 Express Edition

Project • This information applies to Express projects.

InstallShield includes functionality that lets you prevent the current installation from overwriting a future major version of your product. All new Express projects have this functionality by default.

Windows Logo Guideline • According to one of the requirements of the Windows logo program, an installation package must prevent end users from installing an earlier version of the product over a later version.

To add support for preventing end users from being able to install the current version of your product over a future major version:

InstallShield adds an ISPreventDowngrade item to the Upgrade Paths explorer. If end users try to install this version of your product over a newer version of your product, an error message is displayed, informing end users that a newer version is already installed. When end users close the error message box, the installation exits.

Tip • To remove the downgrade prevention functionality from your project, right-click the ISPreventDowngrade item in the Upgrade Paths view and then click Delete.

See Also

Preventing an Old Package from Installing Over a Newer Version (Windows Installer Help Library)

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