certificate updates Archives

Winsage

April 16, 2026

Microsoft’s latest Windows update now confirms if your PC is Secure Boot-protected

Microsoft has introduced a new feature in Windows 11 and Windows 10 that informs users about the status of Secure Boot as part of the April Patch Tuesday update. This feature includes a visual indicator that shows whether devices have the latest Secure Boot certificates, which protect against bootkit malware. The Secure Boot icon can display in green, yellow, or red, indicating different security statuses: green means secure with no actions needed, yellow indicates a pending safety recommendation, and red signals that immediate attention is required. Users can check their Secure Boot status through Settings in both operating systems. It is important to install the latest Windows updates to ensure devices have the most recent Secure Boot certificates, as older certificates will expire in June. The April updates also address 164 vulnerabilities, including eight classified as critical and two identified as zero-day flaws. Users are advised to prioritize these updates to maintain system security.

Winsage

April 2, 2026

Microsoft Provides a Secure Boot Certificate Update

Microsoft will roll out new Secure Boot certificates starting in April 2026, allowing users to access and understand their Secure Boot certificate status through the Windows Security app. This feature will be found under the Device security section in the Secure Boot area. Users with PCs manufactured in 2024 or later will have the necessary certificates, while older models will receive updates via Windows Update. The Windows Security app will use a color-coded system to indicate certificate status: a green check box for up-to-date certificates, a yellow bang for safety recommendations, and a red stop icon for critical issues. Further enhancements, including notifications and in-app guidance, will be introduced in May. Resources for IT administrators are available on Microsoft Support.

Winsage

March 11, 2026

I tested Windows 11 March 2026 Updates: Everything new, improved, and fixed

Microsoft has rolled out the March 2026 Patch Tuesday update for Windows 11 (KB5079473, Build 26200.8037) and Windows 10, focusing on enhancements and functional upgrades. The update applies to Windows 11 versions 25H2 and 24H2, introducing new features, security enhancements, system fixes, and reliability improvements. Key features include: - Support for Emoji 16.0, allowing users to insert new emojis through the Emoji panel. - Windows Backup restore adapted for organizational use, enabling restoration of user settings and applications during sign-in. - Quick Machine Recovery (QMR) enabled by default on more Windows 11 Pro PCs. - A Bing-powered Internet speed test tool accessible from the taskbar. - Sysmon included as a native component for system activity monitoring. - Support for WebP images as desktop wallpapers. - Remote Server Administration Tools (RSAT) supported on Windows 11 Arm64 devices. - Minor enhancements in Accounts and Camera settings. The update also includes reliability and stability improvements, such as enhanced responsiveness of the Windows Update settings page, improved sign-in screen reliability, and better performance for the Windows printing service. It lays groundwork for Secure Boot certificate updates and addresses BitLocker reliability issues. Additionally, internal AI components have been updated, and a servicing stack update (SSU) has been released to enhance Windows Update infrastructure reliability. Microsoft is also expanding the updated Start menu and battery icons to more devices and warns users about the importance of updating Secure Boot certificates before their expiration in June 2026.

Winsage

March 6, 2026

Microsoft’s Secure Boot certificates expire in June 2026, but older PCs may never get the fix

Every Secure Boot-enabled Windows PC relies on cryptographic certificates issued by Microsoft in 2011 for boot process integrity. The first of these certificates will expire on June 24, 2026, impacting the ability to receive future security updates. Microsoft is rolling out replacement certificates through Windows Update, requiring collaboration between Microsoft, PC manufacturers, and users. Three critical certificates will expire: the Microsoft Corporation KEK CA 2011 and Microsoft UEFI CA 2011 in June 2026, and the Microsoft Windows Production PCA 2011 in October 2026. The new certificates introduced in 2023 have a restructured functionality to enhance security. Not all PCs are affected; newer devices manufactured since 2024 come with the new certificates. Windows 10 users face challenges as support ends in October 2025, and unsupported devices will not receive updates. Home users should ensure automatic Windows updates and check for firmware updates, while enterprise environments must verify firmware updates before applying certificate updates. The first certificate expiration is on June 27, 2026.

Winsage

February 23, 2026

Prepare your servers for Secure Boot certificate updates

Windows Server administrators should update Secure Boot certificates before the June 2026 expiration date. Microsoft has held Secure Boot Ask Microsoft Anything (AMA) sessions in December 2025 and February 2026, with recordings available for those who missed them. Upcoming AMAs are scheduled for March and April. Administrators are encouraged to follow Windows Events on the Microsoft Tech Community and bookmark the Windows Secure Boot certificate updates page for centralized guidance and resources.