Windows 11 · 26H1 · Beta

Windows 11 Insider Preview Feature Update (28020.3172)

  • Beta
  • Feature update
  • 26H1
  • amd64
  • arm64

Windows 11 26H1: For specific new hardware; not a feature update for existing PCs

Microsoft release information · Verified Oct 8, 2026

Download amd64 — build 28020.3172 from UUP Dump, opens in a new tab Download arm64 — build 28020.3172 from UUP Dump, opens in a new tab All 26H1 builds JSON — this build from the builds API

AI summary

Released October 7, 2026, Windows 11 Insider Preview Build 28020.3172 is a Beta (26H1) update. Microsoft describes it as including general improvements and fixes but does not specify them in the notes. (blogs.windows.com)

Generated from the package's release notes and forum coverage. Verify against Microsoft's release-health page before acting on it.

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