secure boot

  1. Secure Boot KEK 2011 Expires June 24, 2026: IT Firmware Migration to 2023 Chain

    On June 24, 2026, Microsoft’s original Secure Boot Key Exchange Key from 2011 reaches its expiration date, forcing Windows PCs, servers, virtual machines, and dual-boot systems to move onto Microsoft’s newer 2023 Secure Boot certificate chain. The deadline will not brick ordinary Windows...
  2. Secure Boot 2023: Check Windows Security Status Before June 24, 2026

    Microsoft says Windows 11 and supported Windows 10 PCs can verify the Secure Boot 2023 certificate transition through Windows Security, System Information, and administrator diagnostics, while older or unsupported machines that miss the update will keep booting after June 24, 2026, but lose...
  3. Secure Boot Certificate Expiration 2026: What It Means for Windows PCs

    Microsoft’s original Secure Boot certificate chain begins expiring on June 24 and June 27, 2026, with the Windows boot-loader certificate following on October 19, 2026, but most Windows PCs will keep booting while Microsoft moves supported devices to newer 2023 certificates. The deadline is...
  4. KB5089573 for Windows 11: Faster Shell, Shared Audio, Multi-App Camera & More

    Microsoft released KB5089573 on May 26, 2026, as an optional preview cumulative update for Windows 11 versions 24H2 and 25H2, bringing builds 26100.8524 and 26200.8524 with faster shell interactions, Shared Audio, Multi-App Camera support, accessibility improvements, and servicing fixes. The...
  5. Check Secure Boot Readiness in Windows Security (2023 Certificate Migration)

    Windows users can check Secure Boot readiness by opening the Windows Security app, choosing Device security, and reading the Secure Boot status Microsoft began surfacing there in April 2026 as part of its migration from 2011 Secure Boot certificates to replacement 2023 certificates. That sounds...
  6. Secure Boot 2026 Certificate Expiration: Microsoft 2011 Keys Roll to 2023 Chain

    Beginning June 24, 2026, Microsoft’s original 2011 Secure Boot certificates start expiring across Windows PCs, servers, virtual machines, and Linux systems that rely on Microsoft-signed UEFI boot components, forcing vendors, administrators, and users to move to the newer 2023 certificate chain...
  7. KB5094126 Windows 11 June 2026 Update Causes Boot Failures, Secure Boot, BitLocker Prompts

    Microsoft’s June 9, 2026 Windows 11 cumulative update, KB5094126 for versions 24H2 and 25H2, is reportedly leaving some business PCs unable to boot, throwing BitLocker recovery prompts, blue screens, and Secure Boot errors, with HP and Dell commercial systems appearing most often in early...
  8. Surface Firmware Flaw: Copilot Script Linked to One-Packet Bricking Risk

    Microsoft has reportedly spent roughly the past 90 days shipping Surface firmware updates for a flaw that could let an unpatched device brick itself with a single packet when Secure Boot and Secure Core protections were disabled. The bug is unlikely to become the next mass-exploitation panic...
  9. Windows 11 KB5094126 (June 2026) Update: Boot Failures, BitLocker Loops & Fixes

    Microsoft released Windows 11 security update KB5094126 on June 9, 2026, for Windows 11 versions 24H2 and 25H2, and early reports now tie it to boot failures, BitLocker recovery loops, BSOD-style errors, and broken cloud-drive integration on some PCs. The update was supposed to be the kind of...
  10. KB5094126 Windows 11 June 2026 Update: Boot Failures, BitLocker Prompts, OneDrive Breaks

    Microsoft’s June 9, 2026 Windows 11 cumulative update KB5094126 for versions 24H2 and 25H2 is drawing user reports of boot failures, BitLocker recovery prompts, freezes, 0xc0430001 stop errors on some HP systems, and broken OneDrive or Dropbox integration in File Explorer. The important word is...
  11. Microsoft Secure Boot CA 2011 Expires in 2026: What Linux Admins Must Do

    Microsoft’s 2011 Secure Boot certificate for third-party UEFI boot components is set to expire in late June 2026, forcing Linux distributions, hardware vendors, and administrators to complete a long-planned migration to Microsoft’s newer 2023 Secure Boot certificate chain. The uncomfortable part...
  12. Windows 11 KB5094126 (June 2026): Boot Failures, BitLocker Loops, Secure Boot Errors

    Microsoft released Windows 11 KB5094126, Build 26200.8655, on June 9, 2026, as the June Patch Tuesday update, and early reports now point to boot failures, BitLocker recovery loops, Secure Boot errors, and broken cloud-storage integration on some PCs, especially HP business systems. The irony is...
  13. Surface Firmware Bricks After Embedded-Controller Flaw: Secure Boot & AI Risk

    Microsoft has spent the past 90 days pushing firmware updates for Surface PCs after a reported embedded-controller flaw allowed some unprotected devices with Secure Boot and Secure Core protections disabled to be rendered unbootable by a single malformed hardware command. The unsettling part is...
  14. Surface Firmware Bricking Bug: How AI-Generated Scripts Expose PC Trust Gaps

    Microsoft has spent the past 90 days patching a Surface firmware flaw that reportedly allowed some unprotected devices to be rendered unbootable by a single malformed command packet, after an Australian security researcher and The Register coordinated disclosure with Microsoft in March 2026. The...
  15. Windows 11 Media Creation Tool Updated June 2026: 25H2 Build 26200.8655

    Microsoft has refreshed the Windows 11 Media Creation Tool download path so that, as of June 2026, new installation media pulls the KB5094126 release for Windows 11 version 25H2, producing build 26200.8655 images with the latest Patch Tuesday fixes baked in. That sounds like routine...
  16. KB5094127 BitLocker Recovery Key Prompt on Win10: PCR7 and Secure Boot Clash

    Microsoft’s June 9, 2026 Windows 10 cumulative update KB5094127 can trigger a one-time BitLocker recovery-key prompt on some managed PCs when BitLocker, Secure Boot, PCR7 validation, and the 2023-signed Windows Boot Manager transition collide under a specific Group Policy configuration. That is...
  17. June 2026 Patch Tuesday Checklist: Secure Boot, Encryption, Privacy Hardening

    Microsoft’s June 9, 2026 Patch Tuesday delivered an unusually large Windows security load just weeks before long-lived Secure Boot certificates from 2011 begin expiring in late June, putting Windows 11 users and administrators on notice to review update, privacy, encryption, and hardening...
  18. June 9, 2026 Patch Tuesday: Windows 11/10 Security Update w/ Zero-Days

    Microsoft’s June 9, 2026 Patch Tuesday release delivers cumulative Windows updates for Windows 11 25H2, 24H2, 23H2, and supported Windows 10 ESU/LTSC systems, addressing a record-sized security haul reported at 198 Windows flaws, including three publicly disclosed zero-days. It is the kind of...
  19. Windows 11 June 2026 Patch Tuesday: Secure Boot, BitLocker, AI & Servicing Updates

    Microsoft released Windows 11 26H1 Build 28000.2269 as KB5095051 and Windows 11 23H2 Build 22631.7219 as KB5093998 on June 9, 2026, delivering June Patch Tuesday security fixes, Secure Boot servicing work, BitLocker reliability changes, File Explorer search fixes, AI component updates, and...
  20. CVE-2026-47656: Windows Boot Manager Bypass and the New Boot Chain Risk

    Microsoft has listed CVE-2026-47656 as a Windows Boot Manager security feature bypass vulnerability in the June 2026 security cycle, placing another early-boot weakness in the same operational risk category that has already forced enterprises to rethink Secure Boot maintenance. The interesting...