Microsoft has admitted that it might have broken Windows components including the Start menu and Explorer in the latest round of updates.

The problem , which "primarily affects a limited number of enterprise or managed environments," occurs on PCs running Windows 11 24H2 or 25H2 with a monthly cumulative update released from July 2025. XAML-dependent modern apps such as the Start menu, Explorer, Windows Search, and the taskbar might abruptly crash or fail to load.

The cause, according to Microsoft, is a failure to register certain XAML packages in a timely manner after an update installation. The bad news is that there is no immediate fix, and the workaround involves fiddling with the Windows registry for virtualized environments or a PowerShell script to prevent Explorer launching befor

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