Sometimes, you do not need to modify system folders at all. Many older games look in their own installation directory for DLLs before checking system paths.
“Download. GOG Galaxy,” he said.
Unlike core DirectX files (e.g., d3d9.dll ), the d3x9-26.dll file is part of the utility library. These extension libraries were included with the DirectX SDK (Software Development Kit) and used by developers to simplify complex tasks like texture handling, mesh optimization, shader compilation, and effect files ( .fx ). d3x9-26.dll
When this file is missing or corrupted, you will typically see error messages like "d3dx9_26.dll not found" Sometimes, you do not need to modify system folders at all