#kb5078883

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Windows laptop displaying system update installation screen

KB5078883 — March 2026 Cumulative Update for Windows 10 and Windows 11

KB5078883 is the March 2026 cumulative update that addresses critical security vulnerabilities, improves Windows Hello reliability, and resolves File Explorer performance issues on Windows 10 22H2 and Windows 11 23H2/24H2 systems.

Mar 109 min