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What does Windows 11 KB5077181 fix in the February 2026 Patch Tuesday update?
February 2026 Patch Tuesday
Microsoft shipped February 10, 2026 cumulative updates for supported Windows 11 releases and for Windows 10 devices that are still eligible (mainly ESU and LTSC).
Independent security roundups describe this month as “dozens of CVEs,” and they consistently flag six actively exploited zero-days, though total counts vary by report.
Windows 11 updates (what changed)
Windows 11 24H2/25H2: KB5077181 includes security fixes plus quality improvements, and it fixes a full-screen gaming eligibility detection issue.
KB5077181 also fixes a WPA3‑Personal Wi‑Fi connection problem seen on some devices after KB5074105, and it adds targeting logic to stage Secure Boot certificate updates more safely.
Windows 11 23H2 (Enterprise/Education): the February 10, 2026 cumulative update line includes Secure Boot changes that can replace a 2011-signed boot component with a 2023-signed one on devices that already trust the Windows UEFI CA 2023 certificate.
This 23H2 update set also lists reliability and usability fixes such as unexpected Desktop Window Manager restarts, File Explorer folder renaming problems involving desktop.ini (LocalizedResourceName), and Chinese font updates for GB18030‑2022A support.
It also calls out fixes for certain GPU/dxgmms2.sys stability issues (including KERNEL_SECURITY_CHECK_FAILURE scenarios), plus a fix for VSM devices that restart instead of shutting down or hibernating after newer security updates, and a fix for missing Defender SmartScreen AppRep event logging.
Windows 10 updates (ESU/LTSC focus)
Windows 10 updates on this date mainly target ESU and LTSC tracks, delivered as cumulative updates with security fixes and a similar set of quality corrections.
- KB5075912 (Windows 10 21H2 Enterprise LTSC and ESU machines on 22H2) lists Chinese font changes for GB18030‑2022A, the desktop.ini folder rename fix, GPU stability fixes, VSM shutdown/hibernate restart fixes, and staged Secure Boot certificate targeting data.
- KB5075904 (Windows 10 Enterprise 2019 LTSC / IoT Enterprise LTSC) lists the same core fixes: fonts, VSM shutdown/hibernate restart behavior, desktop.ini rename behavior, and GPU stability.
- KB5075999 (Windows 10 1607 Enterprise LTSC) is also offered, with guidance to ensure the latest servicing stack update is in place before manual installation.
Practical rollout advice (admin-ready)
- Prioritize devices exposed to untrusted content paths (email attachments, downloads, browser-to-file workflows) because multiple sources describe actively exploited issues this month.
- Treat Secure Boot-related changes as “change-managed”: confirm BitLocker recovery readiness, avoid casual Secure Boot DB resets, and plan a rollback path for rare boot validation failures (especially on fleets with custom firmware settings).
- If you run VSM/Secure Launch devices, include shutdown/hibernate validation in your post-patch smoke tests, since this month specifically addresses restart-on-shutdown behavior on some systems.