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CriusMicrosoft warns that starting in June 2026, old Secure Boot certificates will no longer be valid. Users are advised to check their PC’s compatibility in advance and update their firmware to ensure they continue receiving future security updates.
CriusThe February 2026 updates for Windows 11 bring important security enhancements, bug fixes, and prepare users for changes in the Secure Boot infrastructure related to certificate expiration. New features have also been added, and the system’s capabilities have been expanded.
CriusMicrosoft has announced that starting in June 2026, old Secure Boot certificates will no longer be valid. Most devices will require updates through standard Windows updates. For some systems, an OEM firmware update will be necessary to maintain up-to-date boot protection.