This article was previously published under Q178644
This article has been archived. It is offered "as is" and will no longer be updated.
DirectX run-time for End Users (also known as DirectX) is an extension to the Microsoft Windows operating system that provides a set of fast, low-level hardware controls that programmers can use to increase performance for Windows games and multimedia programs. The current generation of Windows games and multimedia programs do not function properly without DirectX. Therefore, by design you cannot remove DirectX.
Beginning with Microsoft Windows 95, DirectX has been integrated into the operating system. Later versions of Windows have included newer versions of the DirectX libraries.
Earlier versions of DirectX included updated audio and video drivers because many hardware manufacturers did not provide DirectX accelerated versions of their drivers. This is no longer the case, but if you cannot start Windows 95 after you install an early version of DirectX, you may have to restore your previous sound and video drivers.
For additional information about how to download and install DirectX, click the article number below to view the article in the Microsoft Knowledge Base:
Microsoft Windows XP Professional x64 Edition, Microsoft Windows XP Home Edition, Microsoft Windows XP Professional, Microsoft Windows 2000, Microsoft Windows NT 4.0, Microsoft Windows Millennium Edition, Microsoft Windows 98 Second Edition, Microsoft Windows 98 Standard Edition, Microsoft Windows 95