Directx 90c Extra Files X86 X64 Guide

Released in August 2004 alongside Windows XP Service Pack 2, DirectX 9.0c introduced Shader Model 3.0, which allowed for longer shader programs and dynamic branching. It became the baseline API for countless titles, including Half-Life 2, World of Warcraft, The Sims 2, and Bioshock. Unlike modern DirectX versions that are tightly integrated into Windows (e.g., DirectX 11 and 12 are part of the OS and cannot be uninstalled), DirectX 9 was distributed as a redistributable package. Developers could bundle only necessary components. Over time, Microsoft released multiple updates to DirectX 9.0c (e.g., June 2010, February 2011, April 2011), each adding new DLLs, debugging tools, and support for newer hardware. The “extra files” refer to these cumulative updates that go beyond the base version shipped with Windows.

Sometimes, after installing the files, you still get a Side-by-Side error (0xc000007b) . This means your architecture is mixed up.

The 0xc000007b Fix:

For Modders: Many texture mods for DX9 games (ENB Series, SweetFX) require d3d9.dll proxies. If you are using a custom d3d9.dll in your game folder, the system ignores the system files. Ensure your mod loads the correct architecture version.

The split between x86 and x64 architectures is central to understanding why extra files exist. directx 90c extra files x86 x64

Even on Windows 10 or 11, a clean installation lacks many DirectX 9.0c extras because Microsoft stopped including them by default after Windows 8. When a modern user launches an older game, they may encounter errors like:

Reinstalling the game often fails because the bundled installer is outdated. The solution is to download the official DirectX 9.0c Redistributable (June 2010) or later, which contains all x86 and x64 extra files. This package extracts into a folder (e.g., DXSETUP.exe and a DXRedist folder with hundreds of CABs). Running it installs every possible version of every DLL, ensuring any legacy title functions correctly. Released in August 2004 alongside Windows XP Service

If you genuinely need the 32‑bit and 64‑bit versions of every DirectX 9.0c DLL:

Alternatively, use DirectX Repair Tool (from Microsoft, not third‑party) – it restores official files without manual folder sorting. For Modders: Many texture mods for DX9 games