‘Avoid Disruption’—Microsoft Updates Windows Before June Deadline

Microsoft has issued a critical security update for Windows 10 users — with a warning. Secure Boot certificates expire next month after 15 years. The new update “enables dynamic status reporting for Secure Boot states in Windows Security App” to help ensure affected PCs remain secure.

In its release notes for KB5087544, the latest ESU update for hundreds of millions of Windows 10 PCs, Microsoft tells users to get ahead of the Secure Boot expiration. “To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance.”

This is the first time Secure Boot certificates have expired — even though they date back to 2011. All Windows 10 PCs will need new certificates, albeit only PCs enrolled for extended security updates (ESU) are eligible. Other PCs will be at risk next month, when the old…