Microsoft’s ‘Important’ Warning—Windows Changes in 6 Weeks

Microsoft is replacing expiring Secure Boot certificates issued in 2011 to keep Windows startup security working.

Most PCs should receive the new certificates automatically, but unsupported Windows 10 devices may be left out.

Windows 10 systems not covered by Extended Security Updates face a growing security gap and higher malware risk.

Users are advised to upgrade or enroll in extended support to stay protected.