Installing More than One Version of InstallShield

InstallShield 2020 can coexist on the same machine with other versions of InstallShield.

The InstallShield 2020 Standalone Build can coexist on the same machine with other versions of the Standalone Build. In most cases, the Standalone Build is not installed on the same machine where InstallShield is installed. If you do install both on the same machine and you want to use the automation interface, review the Installing the Standalone Build and InstallShield on the Same Machine topic in the InstallShield Help Library to learn about special registration and uninstallation considerations.