Install.
: Click the Extensions or Updates & Add-ons tab to see available downloads for that year. Download Revit Extensions for Autodesk Revit 2018
: Navigate to All Products and Services and find Revit in your list. Install
Once you've downloaded the Revit Extensions, follow these steps to install and manage them: Download Revit Extensions for Autodesk Revit 2018
For a second, the screen flickered. The hard drive whirred. Then, like magic, the lines on the screen shifted. The red clash markers—indicating interference—vanished one by one, turning green.