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Story summary
- The February 2026 Windows 11 update KB5077181 prevents Samsung laptops from accessing C: drive, displaying an 'access denied' error.
- Microsoft has confirmed the issue affects Samsung Galaxy Book 4 and may involve Samsung Share.
- Administrative privileges cannot access files or launch applications.
- Microsoft is investigating without a hotfix.
- Users are advised to roll back the update or pause future updates until a solution is available.
