For downloading some 2013, 2014 and later Autodesk products
Selecting the "Install Now" option on this website is the best way to get products up and running on your computer, in far less time than traditional, Web browser–based download and install procedures. With Install Now, you select only the products and components you want, saving considerable download time. The Autodesk ® installer starts directly from the Web, without having to wait for all files to download.
Install Now installs a small helper application, Akamai ® NetSession Interface, on your computer. This application provides the latest Web delivery technology, so that products are delivered to you faster.
Install Now intelligently checks your system for any additional software required by your Autodesk products. If these prerequisites are not already present on your computer, they will be downloaded and installed. In some cases, you will be prompted to restart your computer after the products are installed.
After your first download, Akamai NetSession Interface remains ready to use when you download more Autodesk products. The Akamai NetSession Interface files are small, but if you ever want to remove them, complete instructions are provided in the Help topic "Removing Install Now".
Install Now puts installation files on your computer in {System drive}:\Autodesk\WI\<product name>. These files are used by the installer for product maintenance or reinstall. But if you are using the product on a trial basis and decide not to continue using it, you can delete these files.