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

Several users are experiencing various issues with system startup after installing the KB5077181 update for Windows 11.

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.
Windows Report

Windows KB5077181 Triggers Boot Loops, Login Errors, and Internet Issues

Windows KB5077181 reportedly causes boot loops, SENS login errors, and DHCP internet failures, but there's a workaround ...
WinBuzzer

Windows 11 Update KB5077181 Traps Users in Boot Loops

Microsoft's KB5077181 security update has caused endless restart loops and system lockouts for Windows 11 users, with no ...
Windows Latest

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

Windows 11 February 2026 update adds Cross-Device Resume, MIDI upgrades, security fixes, and major bug fixes for 24H2 and 25H2.