Security · 3h ago
Microsoft blocks Secure Boot update on some Windows 11 PCs
Microsoft has blocked a Secure Boot certificate update on certain older Windows 11 devices that cannot receive OEM updates. The update, which adds a new certificate to prevent bootkit attacks, fails on systems lacking manufacturer support. Users can check if affected via the Microsoft Update Catalog or Windows Update settings.
Meridian48 take
This highlights the ongoing challenge of securing legacy hardware as Microsoft phases out older Secure Boot certificates.
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Watch out Windows users, a Secure Boot update has been blocked on Windows 11 PCs due to failing on some devices — here's how to check if you're affected →
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