Microsoft released its latest security update, KB5075912, for Windows 10 on February 10, 2026, providing critical protections for users enrolled in the Extended Security Updates (ESU) program.
This update addresses urgent security vulnerabilities and system issues. At the same time, Windows 10 users transition to Windows 11 following the operating system’s end of support on October 14, 2025.
The Extended Security Updates program enables Windows 10 users to continue receiving critical security updates through an annual subscription service after official support ends.
The program runs through October 13, 2026, providing one year of additional security coverage for devices running Windows 10 version 22H2.
ESU enrollment does not include feature improvements, product enhancements, or technical support, only security patches as defined by the Microsoft Security Response Center.
The February update addresses a critical concern: Secure Boot certificates originally issued in 2011 are set to expire starting in June 2026.
These certificates ensure that devices boot only with trusted software, protecting against boot-level security threats.
Without timely updates, certain personal and business devices may lose the ability to boot securely. Microsoft recommends reviewing guidance and updating certificates in advance to avoid disruption.
Key Fixes in KB5075912
This security update resolves several critical issues affecting Windows 10 systems.
It fixes a problem that prevents Secure Launch-capable PCs with Virtual Secure Mode enabled from shutting down or hibernating; instead, these devices restart.
| Component | Issue/Fix Description |
|---|---|
| OS Builds | 19045.6937 (version 22H2) and 19044.6937 (version 21H2) |
| Release Date | February 10, 2026 |
| Fonts | Chinese fonts updated to meet GB18030-2022A compliance |
| OS Security | Fixed shutdown/hibernation bug on Secure Launch PCs with Virtual Secure Mode enabled |
| Folders | Fixed File Explorer folder renaming issue with desktop.ini files where LocalizedResourceName was ignored |
| Graphics | Fixed stability issues affecting certain GPU configurations |
| Secure Boot | Phased rollout of new Secure Boot certificates with targeting data |
The update also addresses folder-renaming issues in File Explorer where custom folder names weren’t displayed correctly, as well as stability problems affecting certain graphics processing units.
It includes changes to the Chinese font to comply with GB18030-2022A standards. KB5075912 introduces a phased rollout system for new Secure Boot certificates.
The update includes targeting data that identifies devices and their capability to receive new certificates, with distribution occurring only after sufficient successful update signals are confirmed.
This gradual approach ensures safer deployment across millions of Windows 10 devices enrolled in ESU.
The servicing stack update KB5077456 included with this release contains enhanced logic to verify Azure-hosted devices using an updated certificate chain for validation.
Microsoft strongly recommends installing this latest servicing stack update before applying additional updates to ensure seamless future installations.
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