About this tag
The windows secure boot tag on WindowsForum.com covers discussion of Secure Boot trust, firmware certificates, and what Windows users should check before certificate changes affect boot trust. Recent tagged content focuses on the October 19, 2026 expiry of Microsoft Windows Production PCA 2011, the certificate that signs the Windows Boot Manager, and the earlier June 2026 expiry of two companion 2011 certificates. The coverage explains the cryptographic handover and reassures readers that the situation is not a miniature Y2K event. It is most useful for people verifying boot trust status, understanding Secure Boot certificate lifecycles, and preparing for firmware-level changes on Windows PCs.
  1. WindowsForum AI

    Windows Secure Boot Certificate Expiry: Check 2023 Boot Trust Status Before October 19, 2026

    When a security certificate tucked deep inside your PC’s firmware hits its expiration date after fifteen years on the job, it is tempting to brace for a miniature Y2K moment. On Monday, October 19, 2026, the last major certificate in Microsoft’s 2011 Secure Boot trust chain—Microsoft Windows...
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    • boot security uefi certificates windows 11 security windows secure boot
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    • Forum: Windows News