is a legitimate Windows Installer package created by InstallShield (now part of Revenera). InstallShield is a widely used software tool that developers utilize to build installer packages for Windows applications.
If your system lacks this file or has an outdated version, you may encounter errors such as "InstallScript engine is missing" or "1: The InstallScript engine on this machine is older than the version required". Where to Find the "New" Isscript.msi Download isscriptmsi new download