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Windows 11’s last Secure Boot deadline is weeks away, here’s what you must do

windowslatest.com · published 10 September 2026

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I tested Windows 11 September 2026 update, here’s everything new, improved, and fixed Read at the source ↗

windowslatest.com

Windows 11 KB5124008 out with 5 features, direct download links for offline installer (.msu) Read at the source ↗

windowslatest.com

https://learn.microsoft.com/en-us/windows/release-health/windows-message-center

learn.microsoft.com

Windows 11 gets Secure Boot Allowed Key Exchange Key (KEK) update on more PCs, requires a reboot to install Read at the source ↗

windowslatest.com

Microsoft answers what you must do as Windows 11 Secure Boot deadline hits in days Read at the source ↗

windowslatest.com

https://support.microsoft.com/en-us/servicing/os/secure-boot/2026/02/when-secure-boot-certificates-expire-on-windows-devices

support.microsoft.com

https://support.microsoft.com/en-US/servicing/os/secure-boot/2025/06/windows-secure-boot-certificate-expiration-and-ca-updates

support.microsoft.com

Windows 11 Secure Boot update released to all, hours ahead of expiry Read at the source ↗

windowslatest.com

Microsoft and OEMs answer Windows 11 Secure Boot questions before the October deadline Read at the source ↗

windowslatest.com

Microsoft: Don’t panic if you missed the Windows 11 Secure Boot update, we’re still rolling it out Read at the source ↗

windowslatest.com