Directx End-user Runtime Offline Installer 〈2027〉

The Offline Installer (officially named directx_Jun2010_redist.exe ) is a ~100MB time capsule. When you run it, it extracts and installs a specific set of —DLLs for Direct3D 9, Direct3D 10, XAudio 2.7, XInput 1.3, and DirectSetup. These are the libraries that thousands of games (from BioShock to The Witcher 2 to Guild Wars 2 ) explicitly link against at compile time.

Footnote: No, installing this will not break DirectX 12. Yes, it is safe on Windows 11 24H2. No, you do not need to run it monthly—only when you encounter missing DLL errors or after installing an old game that fails to launch. directx end-user runtime offline installer

It's 100MB of proof that backward compatibility is hard, that "legacy" doesn't mean "dead," and that sometimes, the oldest hammer in the toolbox is still the right tool for the job. Footnote: No, installing this will not break DirectX 12