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Windows 11 Update KB5074105 Enhances Security for System Files

First seen 2 Feb 2026, 11:56 UTC • Neowin

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Microsoft has released a new security feature in the Windows 11 preview update KB5074105, aimed at preventing unauthorized access to critical system files. This update, part of the January 2026 non-security preview, specifically focuses on enhancing the security of the Storage settings in Windows 11 versions 24H2 and 25H2.

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Windows 11 Update KB5074105 Enhances Security for System Files

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