Microsoft is replacing the original 2011 Secure Boot certificate chain across Windows PCs and servers before certificates begin expiring in June 2026 and continue expiring into October, affecting supported Windows 10, Windows 11, and Windows Server systems that still trust those aging boot...
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Microsoft released KB5092765 on May 26, 2026, as a Setup Dynamic Update for Windows 11 versions 24H2 and 25H2, improving setup components while repeating its warning that Secure Boot certificates on most Windows devices begin expiring in June 2026 worldwide. The update itself is small, almost...
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kb5089592
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