Click Add to add this item to the list of items to be installed. If the Add button is disabled, parts of
IIS are already installed.
Next, use the search box again and search for IIS: ASP.NET. Depending on your version of
Windows, this should bring up an item called IIS: ASP.NET or IIS: ASP.NET 4.5 (as well as other,
unrelated items). The IIS: ASP.NET or IIS: ASP.NET 4.5 item is needed to run ASP.NET under IIS,
and is a critical component to run your site successfully. Select this item and click Add. If you see
both items choose IIS: ASP.NET 4.5. Finally, click the Install button at the bottom of the screen and
then accept the license terms. After a while, you should get a confirmation that IIS and its components
were installed successfully.
For detailed instructions on manually setting up IIS, check out these articles on the official IIS
website: