Sxsi X64 Windows 10 Review

While you cannot (and should not) remove the process, you can reduce its impact on system resources.

Windows 10 includes WOW64 (Windows-on-Windows 64), which allows 32-bit apps to run on 64-bit systems. However, the reverse is impossible: a native x64 app like Sxsi will fail on x86 Windows.

Key takeaway: Verify your OS architecture before attempting to install or run any Sxsi x64 binary. Sxsi X64 Windows 10

Before delving into SxS, one must understand the problem it solved. In earlier Windows versions (e.g., Windows 95, 98, and even XP without SxS fully enabled), applications relied on shared DLLs stored in System32. When an application installer replaced a common DLL with an older or incompatible version, previously installed applications that depended on the newer version would crash. This fragility became more pronounced with the advent of 64-bit computing on Windows x64, where the mixing of 32-bit and 64-bit libraries could lead to even more obscure failures.

Microsoft’s first response was Windows File Protection, but it only protected critical system files. The comprehensive solution came with Windows XP and matured significantly by Windows 10: Side-by-Side (SxS) assemblies. An assembly, in this context, is a logical unit of one or more files—DLLs, class libraries, type libraries, or even fonts—along with a manifest that describes the assembly’s identity, version, and dependencies. While you cannot (and should not) remove the

In many forums, users report Sxsi as part of:

If you are an engineer, scientist, or developer, your organization likely provided an Sxsi x64 installer or portable package. Key takeaway: Verify your OS architecture before attempting

Microsoft regularly releases updates that optimize the component store. Ensure you are on Windows 10 22H2 (the latest stable version as of 2025).

The WinSxS folder on a Windows 10 x64 machine typically contains both 32-bit and 64-bit assemblies. For example, x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.1_none and amd64_microsoft.vc90.crt... coexist. The 64-bit loader only accesses assemblies marked with the amd64 or x64 architecture in their manifest. This prevents accidental loading of 32-bit libraries into a 64-bit process—a critical safeguard on x64 Windows.