Windows 11 build 27909.1000 — release notes, downloads, known issues

Windows 11 Insider Preview 27909.1000 (rs_prerelease)

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Coverage Windows 11 Insider Preview Build 27909: Bug Fixes & Improvements Jul 25, 2025 · Windows 11 coverage from this build's release window
Coverage Windows 11 Insider Build 27909: Major Fixes, Improvements & Known Issues Jul 28, 2025 · Windows 11 coverage from this build's release window
Fix Windows 11 Insider Preview Build 27909: Latest Features & Fixes for Canary Channel Jul 25, 2025 · Windows 11 coverage from this build's release window
Coverage Windows 11 Insider Build 27909: Key Updates, Fixes & Known Issues (July 2025) Jul 25, 2025 · Windows 11 coverage from this build's release window
Coverage Windows 11 Canary Build 27909: Key Bug Fixes and Development Insights Jul 25, 2025 · Windows 11 coverage from this build's release window

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Builds sharing the .1000 minor, released within three days.