Microsoft has recently begun replacing expiring Secure Boot certificates on eligible Windows 11 systems running 24H2 and 25H2 ...
XDA Developers on MSN
Microsoft's Secure Boot certificates expire in June 2026, but older PCs may never get the fix
Make sure you've updated before the deadline.
Microsoft has started automatically replacing expiring Secure Boot certificates on eligible Windows 11 24H2 and 25H2 systems. Secure Boot is a security feature that blocks malicious software (like ...
In June 2025, Microsoft announced that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems from 2011, which were superseded by their 2023 counterparts.
Microsoft confirms systems without updated Secure Boot certificates will boot normally but lose some security protections.
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