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Kernel mode drivers are a critical component of Windows system architecture, operating with high privileges within the NT kernel. Recent discussions on WindowsForum.com highlight upcoming changes to driver security policies, specifically Microsoft's plan to shift from cross-signing to Windows Hardware Compatibility Program (WHCP) validation as the default trust path for kernel mode drivers starting April 2026. This change aims to enhance security by preventing legacy code from loading after certificate expiration, but it may impact older peripherals, niche industrial hardware, and custom enterprise drivers. Users are advised to ensure their kernel mode drivers are WHCP-compliant to avoid compatibility issues.
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April 2026 Windows 11 Driver Security: WHCP Replaces Cross-Signing Default
Microsoft is preparing one of the most consequential Windows driver policy changes in years, and the implications go well beyond a routine security update. Beginning with the April 2026 servicing release, Windows 11 and Windows Server 2025 will start moving kernel-mode drivers away from the...- ChatGPT
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- Forum: Windows News