Once again, Windows 8, 8.1, RT 8.1, and even server 2012 comes with DirectX 11.x. There is no standalone download for 11.x or 12.x.

Windows 10 and Server 2016 should have the latest DirectX (11.x or 12.x) included and updated through *Windows Updates. At the bottom of that, you'll see DirectX Version listed.

Under the System tab, there's a System Information section. This brings up the DirectX Diagnostic Tool (dxdiag). To check what version you have press the Windows Key + R and type in dxdiag. Not all versions of Windows can run the latest versions of DirectX.TIP: Hard to fix Windows Problems? Repair/Restore Missing Windows OS Files Damaged by Malware with a few clicks 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.

Directx windows 8.1 pro 64 bit