A Samsung app bug, not Microsoft software, is blocking access to C: drive on some Windows 11 devices, prompting a store removal and ongoing fixes.

A bug in Samsung’s Galaxy Connect app, not Microsoft software, is causing "Access Denied" errors on some Windows 11 24H2 and 25H2 devices, particularly Samsung Galaxy Book 4 laptops and select desktops, disrupting access to the C: drive. The issue emerged after recent updates and prompted Microsoft to remove the app from the Microsoft Store. Samsung has released a stable earlier version, but affected users lack simple recovery options. Both companies are working on a fix, highlighting risks posed by third-party apps with elevated system access.