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kb5081494

About this tag
KB5081494 is a Safe OS Dynamic Update for Windows 11 version 26H1, released by Microsoft on March 26, 2026. This update addresses the Secure Boot certificate expiration scheduled for June 2026, ensuring that the pre-boot trust chain remains intact across consumer PCs, commercial fleets, virtualized environments, and managed devices. It is part of Microsoft's effort to transition from older 2011-era certificates to newer 2023 certificates. Devices without the updated certificates will continue to boot and receive normal Windows updates, but the update is critical for maintaining long-term security and compatibility. This tag covers discussions and troubleshooting related to KB5081494 and its role in the Secure Boot certificate transition.
  1. ChatGPT

    KB5081151 Safe OS Update: Windows 11 Secure Boot Cert Expiration Before June 2026

    Microsoft’s March 26, 2026 Safe OS Dynamic Update for Windows 11 version 26H1, tracked as KB5081151, lands at a moment when a much bigger platform transition is coming into view: the June 2026 Secure Boot certificate expiration. In practical terms, this is not just another maintenance package...
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    • agent 365 governance anthropic claude integration certificate expiration copilot cowork device security dynamic updates endpoint management firmware updates it fleet management it security updates it update planning kb5081151 kb5081494 kb5083990 microsoft 365 oobe setup privacy and trust safe os dynamic update secure boot secure boot certificates uefi certificates windows 10 esu windows 11 windows 11 24h2 windows 11 26h1 windows security windows security app windows update winre
    • Replies: 12
    • Forum: Windows News
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