
The main idea behind DirectX 10.1 is to give benefits to the programming interface which has some limitations in DirectX 10, You can get to see the new graphical techniques that will take the quality of 3D graphic soon.
Verify that you have DirectX 10.1 by running dxdiag from the command prompt. After the final reboot, you will get the option to download Windows Vista SP1 in Windows Update. Install and reboot the computer after installing each update: KB935509, KB937287 and KB93837.
Then run the batch file with elevated administrator privileges. Instructions to active Directx 10.1 on Windows vista: which you can read it here Hack tips for Windows Vista Services Pack 1 for DirectX 10.1 Install the service pack to download Direct X 10.1 for Windows Vista, Windows Update Services using a registry hack. But again Microsoft has open its gate for this new version for testers only but there is a way to get it. However if you want to utilize the new features of DirectX 10.1 will require you to have a new GPU hardware. More information of DirectX 10.1 can be found in AMD-ATI’s whitepaper. Anti-aliasing improvements, with tighter specifications. Method 2: Perform SFC scan and check the issue status.
To get DirectX installed, try right clicking on the install file and select 'run as administrator'. Method 1: Make sure that Service pack 1 installed on your computer.
This is a huge improvement over of DirectX 10 The new features of DirectX 10.1 are : In-order to install DirectX 10.1, refer the following information. DirectX 10.1, The Directx 10 extension that available download via Windows Vista Services Pack 1 Build 6001.16659.