Navigate to: microsoft.com/en-us/download/details.aspx?id=35 (DirectX End-User Runtime).
If the Web Installer says you are up to date but the error persists, the existing file might be corrupt. Locate the File C:\Windows\System32 C:\Windows\SysWOW64 on 64-bit systems). Delete and Re-run d3dx9_30.dll , delete it, and then run the DirectX Web Installer again to force a clean download. Check Game Folders d3dx3 30dll exclusive
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The absolute best and safest way to fix this is to let Microsoft provide the missing file. Visit the official Microsoft Download Center . Download the . Navigate to: microsoft
Once the installation is finished, try opening your game or program again. d3dx3 30dll exclusive