Important security certificates for Windows 11 will soon expire for many users. In some cases, you will need to take action ...

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Another crucial Windows expiration date is right around the corner for more than a billion PCs. Here's what you need to do now.

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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.