Before applying advanced modifications, reboot your system. Occasionally, a temporary glitch or locked cache in system memory prevents Windows from reading active system paths or file directories properly. A fresh reboot can quickly clear the error if it is a temporary fluke. 2. Install the DirectX End-User Runtime Package
The file should be located in C:\Windows\System32 (for 64-bit) or C:\Windows\SysWOW64 (for 32-bit). d3x9-26.dll