CP-043Windows ErrorsEasy

d3dcompiler_43.dll Missing Error: Fix With DirectX Runtime

Estimated time: ~5 min5 stepsVerified:

Independent guide — no official affiliation with microsoft.com.

Time~5 min Steps5 DifficultyEasy Official sourcemicrosoft.com Last updated24 September 2026
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Short answer

d3dcompiler_43.dll is a legacy DirectX 9 component that old games rely on and Windows 10/11 does not install by default. Running Microsoft's official DirectX End-User Runtime web installer loads every missing d3dx/d3dcompiler DLL at once and permanently fixes the error. Updating your graphics driver is also recommended for overall DirectX stability.

Official page

microsoft.com

Official DirectX End-User Runtime setup

01 — Step-by-step fix

Step-by-step fix

  1. ADIM 01

    Download the DirectX End-User Runtime

    Get dxwebsetup.exe from Microsoft's official download page (id=35). This web installer detects which legacy DirectX components are missing on your system.

  2. ADIM 02

    Complete the setup

    Run dxwebsetup.exe, uncheck the Bing bar offer if you do not want it and continue. Setup downloads missing d3dx9_xx.dll, d3dcompiler_43.dll and XInput components.

  3. ADIM 03

    Update your graphics driver

    Install the latest NVIDIA/AMD/Intel driver. Old drivers can trigger the same error while working with DirectX 9 components. Choose 'clean installation' during driver setup.

  4. ADIM 04

    Restart and test

    After restarting, launch the game that showed the error. d3dcompiler_43.dll is now present in System32 and the game runs.

  5. ADIM 05

    If it persists, verify game files

    Use Steam's Properties > Local Files > Verify integrity, or Epic's Manage > Verify. Alternatively, run the DirectX setup inside the game's _CommonRedist folder manually.

02 — Frequently asked questions

Frequently asked questions

DirectX 12 is installed — why is d3dcompiler_43.dll requested?

Windows 10/11 includes only the DirectX 12 core and modern components. d3dcompiler_43.dll is the compiler module of pre-2010 DirectX 9 era games; that is why the legacy runtime package must be installed separately.

How is it different from d3dcompiler_47.dll?

Version 47 ships by default with modern games and Windows 10/11; version 43 is only needed by old titles. They serve different applications and do not substitute each other.

Is copying the DLL into the game folder enough?

It may work temporarily, but version mismatches cause further DLL errors. The official runtime installs all dependencies with correct versions — the permanent and safe solution.

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