"Secure Boot is a built-in security feature that ensures that the integrity of low-level software isn't modified or compromised. It is like a special antivirus that runs before the operating system is booted into. It works by checking cryptographic signatures against trusted certificates stored in the device's firmware. If there's a mismatch, it blocks the computer from booting, effectively preventing malicious software from taking over the device."
"The Secure Boot certificates used by Windows devices since 2011 are set to expire in June 2026, forcing Microsoft and PC makers to move eligible systems to newer certificates. Microsoft says supported Windows 11 PCs should receive the update through Windows Update, while some devices may still need firmware updates from their manufacturers."
"Unlike Microsoft Defender and other antivirus programs, it sits within your computer's Unified Extensible Firmware Interface (UEFI). That makes it an extremely powerful component of Windows security, which is all the more reason this expiration matters."
"According to Windows Central, this will be the first time Windows updates Secure Boot. That means, very few people will know how to ensure they remain safe. Fortunately for many, this transition is automatic, meaning you don't need to do anything to get it. As long as you're on a Windows 11 device or a Windows 10 device with ESU turned on, you should have received the update."
Secure Boot is a built-in security feature that verifies the integrity of low-level software before the operating system starts. It checks cryptographic signatures against trusted certificates stored in device firmware, and blocks booting if signatures do not match. Secure Boot runs in UEFI, making it a powerful part of Windows security. Certificates used by Windows devices since 2011 are set to expire in June 2026, prompting Microsoft and PC makers to move eligible systems to newer certificates. Supported Windows 11 PCs should receive the update through Windows Update, while some devices may require manufacturer firmware updates. The process is expected to be automatic, though some users may see multiple reboots during installation.
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