Secure Boot update blocked on some Windows 11 PCs due to known issues

Certain older devices that cannot receive updates via their OEM may not be able to install the latest Secure Boot certificate.
Forbes

Microsoft Warns PC Users—New Windows Update May Lock You Out

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. New warning for Windows users. Barely 48 hours after Microsoft’s new security update went ...
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Microsoft confirms Secure Boot update failing on some Windows 11 PCs, blocks update due to known issues

Microsoft has confirmed that Secure Boot certificate updates are failing or being blocked on some Windows 11 PCs.