Place the 32-bit version of the DLL into C:\Windows\SysWOW64 . Place the DLL into C:\Windows\System32 . Restart your PC to finish the process. Summary Checklist
The existing DLL file is damaged or was deleted by a malware infection. d3dx3 30dll new
This article is for educational and troubleshooting purposes. Always download software from official sources. The author is not affiliated with Microsoft Corporation. DirectX is a registered trademark of Microsoft. Place the 32-bit version of the DLL into C:\Windows\SysWOW64
This is the best and most recommended solution. It involves running the official installer from Microsoft, which will place all the correct, legitimate, and up-to-date legacy DirectX 9 files onto your system. Summary Checklist The existing DLL file is damaged
You’ve installed the official DirectX redistributable, rebooted, but the error appears again. Try these advanced fixes:
directly from Microsoft. This package restores all legacy DirectX files. System File Checker : If the file is present but broken, running the command sfc /scannow