Windows 11 · 26H1 · Experimental

Windows 11 Insider Preview Feature Update (28120.3454)

  • Experimental
  • Feature update
  • 26H1
  • amd64
  • arm64

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

Microsoft release information · Verified Nov 6, 2026

Download amd64 — build 28120.3454 from UUP Dump, opens in a new tab Download arm64 — build 28120.3454 from UUP Dump, opens in a new tab All 26H1 builds JSON — this build from the builds API

AI summary

Windows 11 Insider Preview Feature Update (28120.3454) is identified as an Experimental release for version 26H1. I couldn’t verify specific changes for this build, so none are listed.

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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