You are trying to export a Revit file that is already open in another session, or the family editor is active. Solution: Close all other Revit instances. Ensure you are in the main project environment, not editing a family (e.g., a door or window).
Navisworks uses two primary file types:
: Revit, AutoCAD (including specialized toolsets like Plant 3D), and 3ds Max. autodesk navisworks exporter download
Depending on your exact needs and administration rights, there are two primary methods to source this utility: 1. Direct Public Download You are trying to export a Revit file