Because this is enterprise-grade software, you cannot download it from a public mirror. To obtain the installation media, you must use Hexagon’s official channels:
Before running the installer, ensure your workstation meets the necessary technical criteria to avoid installation errors: Smart Interop Publisher - Hexagon University
Intergraph Smart Interop Publisher Download: A Comprehensive Guide
: Once logged in, navigate to the View Downloads tab and search for "Smart Interop Publisher".