Microsoft's KB5077181 security update has caused endless restart loops and system lockouts for Windows 11 users, with no official fix released as of February 13.

In June 2025, Microsoft announced that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems from 2011, which were superseded by their 2023 counterparts.

Microsoft has announced it will deliver new Secure Boot certificates via Windows Update starting March 2026 before 2011 certificates expire in June.

Microsoft releases KB5077178, KB5077180, and KB5077374 with WinRE upgrades, Secure Boot updates, and Dynamic Setup improvements.

Microsoft's latest Windows 11 update KB5077181 is wreaking havoc globally. Users face endless restart cycles, broken logins, and total internet loss. Microsoft advises uninstalling the update ...