To download extensions for , you can use several official Autodesk channels. While Revit 2018 is an older version and may not appear in the standard "All Products" list for all accounts, you can still find its specific add-ins and extensions through the following methods: 1. Autodesk Account Portal
A: No. The extensions are included with any valid Autodesk Revit subscription (commercial, educational, or trial). upd download revit extensions for autodesk revit 2018