Directx 90c Extra Files: X86 X64

Method 1: The Official Microsoft Redistributable (Recommended)

Accept the agreement and complete the wizard. This deploys all x86 and x64 extra files into your Windows system directories.

The installer will scan your system and automatically copy all missing x86 and x64 extra files into your system folders. Click and restart your computer. Technical Overview of the Extra Files Directory directx 90c extra files x86 x64

For the technically curious, here's a look at what these "extra files" truly are, once you dive into the SDK folders.

The search term "extra files" is a user-friendly way of describing the from the legacy DirectX SDK. Click and restart your computer

For handling controllers and joysticks. DirectSound/DirectMusic: For audio processing.

Unlike DirectX 9.0a or 9.0b, version 9.0c introduced the Shader Model 3.0 . This allowed for more complex lighting, normal mapping, and bloom effects without killing performance. Games like Half-Life 2: Episode Two , Bioshock , World of Warcraft (Classic), and The Sims 3 all relied heavily on 9.0c. For handling controllers and joysticks

This guide explains what these files are, why you need them, and how to install them properly for both x86 (32-bit) and x64 (64-bit) systems. What Are DirectX 9.0c Extra Files?

When the extra runtime files are missing, Windows will block the game from launching and present one of several standard error messages. Audio Errors (XAudio2 & X3DAudio)

If you run dxwebsetup.exe and it finishes quickly, you might think it failed. This is because the web installer only downloads missing components. If it detects none, it may exit without a detailed log of its actions. This is why the offline installer is recommended—it forces a full overwrite and is more transparent about its operations.