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 ...
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.
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that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems from 2011, which were superseded by their 2023 counterparts.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 has linked recent reports of Windows 11 boot failures after installing the January 2026 updates to previously failed attempts to install the December 2025 security update, which left systems ...
Microsoft will use standard Windows 11 updates to keep Secure Boot working on existing PCs as the operating system's original certificates near their end. The company says Secure Boot certificates ...
Get ye to Windows Update, because there's a good chance you've got new Secure Boot certificates to install. Microsoft just announced that it will be refreshing those certificates, which were ...
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