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).
: For Revit-specific "Publish to NWC" add-ons, sign in to your Autodesk Account , navigate to Products & Services , select Revit , and look under the Extensions tab. 2. Installation & Access autodesk navisworks exporter download
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