As part of my standard troubleshooting for a user's issue with a webapp, I uninstalled their version of IE9 x64 by locating the original update in Windows Updates. Now I can't seem to find an installer that will work to get the program back.
The option to select it in Windows Features has disappeared as well since I uninstalled it.
Microsoft only gives you the option to download it for Vista or Server 2008 for development purposes. http://www.microsoft.com/en-us/download/internet-explorer-9-details.aspx
Any other 3rd-party link I've found looks like something that would be loaded with malware.
Our office requires use of IE9 for compatibility purposes with our corporate webapps.