whcp drivers

Microsoft’s April 2026 Windows update marks a decisive break with an older era of kernel driver trust. Starting with Windows 11 24H2, 25H2, 26H1, and Windows Server 2025, systems in scope will no longer treat the legacy cross-signed driver program as a blanket path to trust; instead, they will...

Microsoft is tightening one of Windows’ oldest trust assumptions, and the fallout could reach far beyond security teams. Beginning with the April 2026 security update, Windows will no longer trust legacy kernel drivers signed through the old cross-signed root program by default on Windows 11...