Directx is a set of components in windows that allows software, primarily and especially games, to work directly with your video and audio hardware.. Directx 9 is supported in windows 10, windows 8, windows 7, windows vista, and windows xp. if you have a program that calls for a directx 9 file in windows 10 or windows 8, installing the downloadable version (the process above) is the way to solve that problem - it will not "downgrade" your directx 10/11/12 install!. Directx 12 and 11.3 are included with windows 10 and server 2016, and it is unclear if the 2 versions are supported in previous systems like windows 8, 7, etc. no stand-alone file is available for directx 12 and 11.3, you may use windows update to complete the update..
