In Windows 8 x64, the architecture allows multiple versions of system files (like DLLs) to run simultaneously without conflict. WinSxS Folder Location: Found at C:\Windows\WinSxS .

folder, which allows it to run 32-bit applications alongside 64-bit ones, though it cannot run old 16-bit software. Super User Safety Recommendation:

folder) was significantly enhanced by integrating repair capabilities directly into the Deployment Image Servicing and Management (DISM) Self-Healing Storage

If your "sxsi" query refers to professional Sony SxS memory cards, ensure you have the specific x64 driver version 2.0 or later for Windows 8 compatibility.