In the vast majority of cases, the solution is to properly reinstall d3dx9_26.dll on your PC, to the Windows system folder. Try installing the program again using the original installation media or contact your system administrator or the software vender for support. d3dx9_26.dll is either not designed to run on Windows or it contains an error.

Reinstalling the program may fix this problem.

The code execution cannot proceed because d3dx9_26.dll was not found.There was a problem starting d3dx9_26.dll.Try reinstalling the program to fix this problem. The program can't start because d3dx9_26.dll is missing from your computer.The most commonly occurring error messages are: For instance, a faulty application, d3dx9_26.dll has been deleted or misplaced, corrupted by malicious software present on your PC or a damaged Windows registry. Errors related to d3dx9_26.dll can arise for a few different different reasons.