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.

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 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 availble.
Morning Overview on MSN

New Windows 11 bug alert has Microsoft users watching every click

Windows 11’s first big update of 2026 was supposed to harden security and smooth out rough edges. Instead, it has left some users staring at blank desktops, stalled shutdown screens, and boot loops ...

Windows 11 KB5077181 & KB5075941 cumulative updates released

Microsoft has released Windows 11 KB5077181 and KB5075941 cumulative updates for versions 25H2/24H2 and 23H2 to fix security ...