This package is safe. It is signed by Microsoft. It will not break modern DirectX 12 or Vulkan games. It does not install “old” DirectX over new. It simply populates the SysWOW64 and System32 folders with runtime DLLs that game developers assumed would be present.
If you’re running Windows 10 or 11, your system has DirectX 12 and basic DirectX 9 support (via the D3D9 runtime). But those helper libraries? Missing. And older games rely on them absolutely. directx end-user runtimes (june 2010) package
That said: It’s not a performance booster or a “tweak.” It’s a compatibility layer. This package is safe
Great question. Microsoft’s official position is that DirectX is part of the operating system and updated via Windows Update. But the optional, developer-oriented D3DX libraries (the “D3DX” helper functions for textures, shader compilation, math, and mesh processing) were never rolled into the core OS. They were part of the legacy DirectX SDK. It does not install “old” DirectX over new
Why You Might Still Need the DirectX End-User Runtimes (June 2010) Package in 2024
First, a clarification. This is DirectX 11 or DirectX 12. Those are modern API versions built into Windows 8, 10, and 11. Instead, the June 2010 package is the final cumulative redistributable for the legacy DirectX 9.0c runtime.