Windows 11 26H1 build 28000.1575 (KB5077179) — release notes, downloads, known issues

Windows 11 · 26H1 · Release · Security update (Patch Tuesday)

Windows 11, version 26H1 (28000.1575)

Windows 11 26H1: Ships on new silicon only

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Coverage KB5077179 Windows 11 28000 1575: Multi MSU sequencing and DISM guide Feb 10, 2026 · names this build
Coverage Windows 11 26H1 Bromine Platform Release: What It Means for New PCs Feb 10, 2026 · Windows 11 26H1 coverage from this build's release window
Coverage Windows 11 26H1 Bromine: Factory Image for Snapdragon X2 PCs Feb 10, 2026 · Windows 11 26H1 coverage from this build's release window
Coverage Windows 11 26H1 vs 26H2: Parallel Arm Platform and Broad 2026 Update Feb 10, 2026 · Windows 11 26H1 coverage from this build's release window
Coverage Windows 11 26H1 Bromine: Platform Release for Next Gen ARM Laptops Feb 11, 2026 · Windows 11 26H1 coverage from this build's release window
Coverage Windows 11 26H1 Bromine: Snapdragon X2 Platform Release Explained Feb 11, 2026 · Windows 11 26H1 coverage from this build's release window
Coverage Windows 11 26H1 Bromine: Platform Image for Snapdragon X2 Arm Laptops Feb 11, 2026 · Windows 11 26H1 coverage from this build's release window
Coverage Windows 11 26H1 Platform Enablement for Snapdragon X2 Arm Laptops Feb 11, 2026 · Windows 11 26H1 coverage from this build's release window

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