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D3x9-26.dll -

Microsoft no longer includes older DirectX 9 files with Windows 10/11. You need the DirectX End-User Runtime (June 2010) .

Important nuance: The file you need is often named d3dx9_26.dll (with an underscore) in Microsoft’s distribution. Some games expect the hyphenated name d3x9-26.dll due to a developer typo or custom build. If the hyphenated version is missing, you may need to rename d3dx9_26.dll to d3x9-26.dll inside the game folder. d3x9-26.dll

  • Install/repair DirectX runtime.
  • Run System File Checker (SFC) and DISM.
  • Update graphics drivers.
  • Scan for malware.
  • Check for Windows updates.
  • If still missing, reinstall the game’s Visual C++ / DirectX redistributables provided in the game’s installer folder.

    • If the automated installer fails, you can extract the exact file from the DirectX 9 redistributable. Microsoft no longer includes older DirectX 9 files

  • Register the DLL (optional but helpful):