Microsoft's Secure Boot certificates expire in June, and unless you've enrolled in its 'Extended Security Updates' program, the OS will fall into a 'degraded security state', Microsoft says.
Microsoft ended software support for Windows 10 in October 2025, bringing an end to the operating system launched in 2015.
Windows 10 KB5075912 is rolling out on PCs with Extended Security Updates (ESU), and it bumps the OS to Build 19045.6937.
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