Windows 11 KB5070311 25H2 upgrades dark mode, direct download links for .msu (offline installer)

Windows 11 KB5070311 update for 25H2/24H2 introduces dark mode for File Explorer dialogs and aligns Search UI height with the Start menu. Direct download links for the offline installer (.msu) are available for x64 and Arm64. The update includes improvements to dark mode consistency, context menu simplification, and fixes for File Explorer issues. Additional enhancements include matching Search UI height with the Start menu, managing Windows Sandbox and more in Advanced Settings, full-screen gaming experience on handhelds, and improved Quick Machine Recovery functionality.