The solution to this testing and deployment madness was simple: DirectX became part of the operating system. With the looming release of Windows 圆4, it looked like the test matrix was going to spiral out of control–at that point, only Windows 95 support has been retired. DirectSetup kept most of this detail hidden from developers and end-users, but it was a complicated job none-the-less. There was every Service Pack level of Windows 98, Windows 98 SE, Windows 2000, Windows Server 2000, Windows XP, and Windows Server 2003 plus all the variants to support. In 2004 when Microsoft released DirectX 9.0c, the test matrix was rather large. Be sure to read this blog post and this one. IMPORTANT: The DirectX End-User Runtime has been updated in 2021 to address SHA-1 deprecation. Of course, there were also many problems with poorly written installers, misconfigured machines, and the fact that DirectX components themselves were rather invasive into the system. The DirectSetup API and well-known DXSETUP.EXE program became common place on game disks, and PC gamers everywhere were trained to run it themselves to keep their systems ready for the latest games.
As the number of supported operating systems grew, so did the complexities of deploying these components. Not all versions of Windows can run the latest versions of DirectX.When the DirectX technology was created in the mid 1990s, it was designed to be deployed by games into the Windows 95 operating system as part of the game’s install process. If you have Windows 10, then you already have the latest version of DirectX installed. To get the latest version of DirectX for your version of Windows, use Windows Update. We recommend that you select Yes to help ensure that your drivers have been signed by a publisher that has verified their authenticity.
The first time you use the DirectX Diagnostic Tool, you might be asked whether you want to check if your drivers are digitally signed. In the DirectX Diagnostic Tool, select the System tab, then check the DirectX version number under System Information. To check which version of DirectX is on your PC using the DirectX Diagnostic Tool, select the Start button and type dxdiag in the search box, then press Enter.
If your PC doesn't have the right version of DirectX installed (the product box should tell you which one you need), your game might not work properly. DirectX is a suite of multimedia technologies required by many Windows games.
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