Uefi Certificates
The latest Uefi Certificates coverage — news, analysis, and updates from the WindowsNews.AI desk.
Microsoft Details Secure Boot Certificate Block That Could Erode Windows Security
Microsoft has published a new support document, KB5105943, detailing an unusual Secure Boot certificate block that prevents certain Windows 10, Windows 11, and Windows Server devices from receiving...
Ventoy 1.1.15 Ships with Critical Secure Boot Certificate Support and Boot Fix
Ventoy 1.1.15 landed on June 25, 2026, delivering a critical patch for Windows users who rely on the tool for bootable USB drives. The update comes just days after two rapid-fire predecessor releases...
Microsoft’s June 2026 Secure Boot Warning: IT Must Act Now to Keep Windows Booting
Microsoft has issued a new reminder that the phased rollout of Secure Boot certificate updates remains on track, urging IT administrators and Windows users to continue deploying the necessary changes...
June 24, 2026: The Day Microsoft's 2011 Secure Boot Key Expires – Are Your Devices Ready?
As the calendar inches toward June 24, 2026, a little-known but critical component of Windows security is reaching its end of life. Microsoft's original Secure Boot Key Exchange Key (KEK), issued in...
Windows Security to Add Secure Boot Readiness Indicator for Certificate Migration in April 2026
Microsoft is preparing to add a long‑awaited Secure Boot readiness status to the Windows Security app, with the feature set to roll out in April 2026 as part of an ongoing certificate migration...
Countdown to June 2026: Linux Admins Must Replace Microsoft’s Secure Boot Certificate or Risk Unbootable Systems
On June 21, 2026, a digital certificate buried deep inside millions of PCs expires, abruptly rendering Linux and other non-Windows operating systems unbootable on affected machines. That...
Secure Boot KEK CA 2011 expires June 2026; millions of PCs risk boot failures without firmware updates.
Microsoft’s fleet of 2011-vintage Secure Boot certificates is heading toward a hard expiration in June 2026, and the most critical deadline involves the Microsoft Corporation KEK CA 2011—a...
Secure Boot Certificate Upgrade: 2011 Keys Expire 2026—Act Now
Every Windows PC that relies on Secure Boot faces a hard deadline in the summer of 2026. On July 1, 2026, the root certificate that has authenticated the Windows boot process since the days of...
Secure Boot 2026: OEM dbDefault vs Microsoft UEFI cert migration guide
Microsoft's May 18 Secure Boot AMA was aimed squarely at IT administrators preparing for the June 2026 expiration of older Windows Secure Boot certificates, and one enterprise question now captures...
Windows 10 users risk boot failure after Secure Boot certificate expiration in June 2026
Microsoft's Secure Boot ecosystem faces a watershed moment in June 2026 when the original 2011 root certificates begin to expire, threatening the bootability of millions of Windows PCs that fall...
Check Your PC’s Secure Boot Certificate Before 2026 Deadline
Time is running out for Windows users to prepare for a seismic shift in the Secure Boot trust chain. On June 19, 2026, the Microsoft Windows UEFI CA 2011 certificate—the digital cornerstone that...
Microsoft Finally Makes Secure Boot Certificates Human-Readable with a Single PowerShell Switch
On April 28, 2026, Microsoft published KB5093574 detailing a small but transformative update to Windows PowerShell: the Get-SecureBootUEFI cmdlet now accepts a -Decoded switch that renders Secure...