February’s Windows 11 update is causing startup problems for users

A few days ago, Microsoft released update KB5077181 for Windows 11 (both 24H2 and 25H2). Now, some reports (via Neowin) are emerging that the new version is causing boot problems for users. The critical startup problems appear to occur immediately after installation,

Windows 11 KB5077181 fixes boot failures linked to failed updates

Microsoft says it has resolved a Windows 11 bug that caused some commercial systems to fail to boot with an "UNMOUNTABLE_BOOT_VOLUME" error after installing recent security updates, with the fix delivered in the 2026 Patch Tuesday update.
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Microsoft says Windows 11 update causes BSOD on some GPU config, broke WPA3 Wi‑Fi, but a fix is rolling out

Microsoft says it is aware of two separate issues that could affect some Windows 11 installs, including a fatal bug that crashes PCs.
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Windows 11 KB5077181 update causing boot loops and connectivity issues

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 immediately via Control Panel to restore functionality.

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Microsoft has responded to the torrent of headlines following multiple bugs and emergency updates with an assurance that it is “working to rebuild trust in Windows.” The company’s engineers, The Verge reports, “are now focusing on performance, reliability, and the overall Windows experience.”

Windows 11 update KB5077181 is causing critical boot loops for some users1 1

KB5077181 is causing devices to restart over 15 times in an infinite loop. Users also report network issues and error codes.
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Windows 11 KB5077181 update fixes Nvidia black screen bug and gaming issues

Microsoft's February update KB5077181 tackles the black screen crashes hitting Nvidia RTX users since January. The mandatory patch also restores gaming performance and fixes 58 security flaws that left Windows 11 systems unstable for weeks.
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Windows 11 KB5077181 fixes gaming bugs, Nvidia black screen, and performance issue affecting explorer.exe, taskbar, and Start menu

KB5077181 could make some PCs faster if explorer.exe was hanging on your system, and it also fixes the black screen issue on Nvidia GPUs.

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Fed up with the latest Windows patches causing visual artifacts in games? Nvidia representatives are suggesting uninstalling the latest Windows patch might be the only solution.
TWCN Tech News

Fix 0x80240069 Windows Update error

Windows Update error 0x80240069 has been occurring recently when installing KB5063878 using enterprise tools like WSUS or SCCM, but it works fine when using Windows ...