Fix D3DX9_43.dll Is Missing: Install DirectX 9 the Official Way
Short answer
The D3DX9_43.dll error means DirectX 9 components required by older games are missing. Run Microsoft's DirectX End-User Runtime installer and restart — no need to download DLL files individually.
Official page
microsoft.com/en-us/download/details.aspx?id=35
DirectX End-User Runtime (official Microsoft page)
01 — Step by Step
Step-by-step fix
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Download DirectX End-User Runtime
Get dxwebsetup.exe from Microsoft's official page (microsoft.com/en-us/download/details.aspx?id=35).
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Run the installer
Untick the Bing Bar offer and continue. The installer downloads missing DirectX 9 components automatically.
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Restart the computer
Reboot after setup and launch the game again.
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If it persists, verify game files
Run file verification/repair from Steam, Epic Games etc. Broken DLL copies are replaced automatically.
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Also install Visual C++ packages
If MSVCP140.dll warnings accompany the error, install the Visual C++ 2015-2022 package too.
02 — FAQ
Frequently asked questions
01Which games throw D3DX9_43.dll errors?
02Setup says DirectX is already installed?
03Does copying the DLL to System32 work?
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