Windows 11’s 24H2 Update Breaks Core UI - What You Need to Know
December 1st, 2025

❓What:
Windows 11 version 24H2 (after applying cumulative update KB5062553 released July 2025) is causing critical shell-level failures.
Affected components include the Start Menu, Taskbar, File Explorer (explorer.exe), System Settings, and more. On login — especially first-time logons or in non-persistent Virtual Desktop Infrastructure (VDI) environments - users may get empty taskbars, unresponsive Start buttons, crashes of explorer.exe or ShellHost.exe, or even a black screen / unusable desktop UI.
The root cause: a race condition with XAML-based UI dependency packages. After the update, required packages sometimes don’t register in time before the shell attempts to load UI components — resulting in shell startup failures.



