Autodesk.inventor.interop.dll May 2026

Autodesk.Inventor.Interop.dll is the essential Primary Interop Assembly (PIA) that acts as a bridge between .NET-based applications (C#, VB.NET) and the Autodesk Inventor COM API Technical Review Core Purpose

Inventor Add-in templates (VS Extension):
The official "Autodesk Inventor Add-in" templates handle interop references correctly out of the box. autodesk.inventor.interop.dll

Document the fix

Understanding Autodesk.Inventor.Interop.dll: The Gateway to Inventor API Development Autodesk