XAML packages

Microsoft has acknowledged issues with Windows updates that affect key components like the Start menu and Explorer, primarily impacting enterprise environments using Windows 11 versions 24H2 or 25H2 after the July 2025 cumulative update. The problems arise from the failure to register certain XAML packages, leading to crashes or loading failures in XAML-dependent applications. Symptoms include black screens, startup crashes, and unresponsive Start menus and taskbars. Microsoft has not provided an immediate solution but suggests workarounds involving the Windows registry or PowerShell scripts. The issues are unlikely to affect personal devices but may occur if updates are installed before user logins on persistent or non-persistent OS installations.