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A nasty Windows 11 bug is causing the C drive to become inaccessible in select devices, says Microsoft

There is a custom fix, but it's probably best to wait.

Microsoft shares fix for Windows C: drive access issues on Samsung PCs

Microsoft has shared guidance to fix C:\ drive access issues and app failures on some Samsung laptops running Windows 11, ...
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Samsung laptops hit by Windows 11 C:\ drive access error after February updates

Windows 11 February updates are breaking Samsung Galaxy Book 4 laptops, blocking access to the C:/ drive and preventing apps from launching. Microsoft warns against risky workarounds while ...

Locked out of C drive on your Windows PC? Microsoft outlines fix for Samsung app bug

Microsoft has pulled a faulty Samsung app after it locked some Windows 11 users out of their C drive. The company has now shared recovery steps to restore access and fix affected systems.