How Microsoft Is Rewriting the Windows 11 Kernel with Rust for Safer, Faster Performance

Microsoft has begun replacing parts of the Windows 11 kernel with Rust, adding around 36,000 lines of memory‑safe code that have passed boot tests, with the Win32k.sys driver now available in Insider builds, promising no performance loss and even speed gains over C++.

Memory SafetyRustWin32k.sys

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How Microsoft Is Rewriting the Windows 11 Kernel with Rust for Safer, Faster Performance