Microsoft’s April 2026 Windows Update Ends Trust for Cross-Signed Kernel Drivers

[David_Schroth]

Microsoft is closing a security gap that has been open for roughly twenty years. Starting with the April 2026 Windows update, the company will remove default trust for kernel drivers signed through the old cross-signed root program, requiring instead that all new kernel drivers be certified through the Windows Hardware Compatibility Program (WHCP). The change […]

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[igor_kavinski]

I care about virtual device drivers for RAM drives and possibly ISO mounters. I hope this does not make it impossible to use them.