Whoops! Microsoft just broke Windows Hello with the latest Windows 11 update
There can’t be a silver lining without a cloud, and for all of the problems Microsoft managed to fix with the KB5055523 update for Windows 11, there is the small issue of it causing Windows Hello authentication to stop working for some.
While the problem is limited to users who meet fairly narrow criteria, the impact for those affected is significant. If you’re running System Guard Secure Launch or Dynamic Root of Trust for Measurement on Windows 11 and Server 2025, caution is advised.