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Windows 11 Windows 11 Insider 26H1 Insider Preview, Beta Channel
Windows Insider

Build 28020.3445

Build 28020.3445: Windows Insider Beta Channel, November 2026. Separate Magnifier zoom levels and Windows Search inline actions

In short

Windows Search adds inline actions, while Magnifier gains separate zoom levels and view locking for each screen. These changes are rolling out to Insiders in the Beta Channel.

Does it affect you? Applies to: Devices enrolled in the Windows Insider Program in the Beta Channel (26H1).

Build
28020.3445

This is a test build for people in the Windows Insider Program. Features in it can change, be removed, or never reach regular Windows releases.

What changes

Improvements 3 changes

Windows Search

Gradual rollout

For: Insiders in the Beta Channel

  • Windows Search is improving how it matches what you mean, including when you make typos or use synonyms.1
    These matching improvements will continue to be fine-tuned over the coming weeks. English is the only supported language for this initial release.

Magnifier

Gradual rollout

For: Insiders using Magnifier with multiple monitors

  • Magnifier can keep a different zoom level on each screen, so one screen's magnified view no longer spills onto another.2
    Set monitors to Extend, not Duplicate. Adjust zoom with Windows key + Plus or Minus, Ctrl + Alt and the mouse wheel, Settings > Accessibility > Magnifier, or the Magnifier toolbar. Per-monitor zoom is on by default.

File Explorer

Gradual rollout

For: Insiders in the Beta Channel

  • PDFs and non-HTML files downloaded from the web can now appear automatically in the Preview pane.3

New features 3 changes

Windows Search

Gradual rollout

For: Insiders in the Beta Channel

  • Windows Search gets a faster, simpler design and inline actions for tasks like turning on Bluetooth or arranging windows.4
    The new experience is built on WinUI 3. English is the only supported language for this initial release.

Magnifier

Gradual rollout 2 items
  • You can lock a screen's magnified view in place while you move your pointer to another screen.5
    Press Ctrl + Windows key + K to lock or unlock a screen. Press Windows key + Esc to release all locks; the shortcut can be changed to Ctrl + Alt + P in Settings > Accessibility > Magnifier.
  • A new contrast theme reduces glare without changing the colors in photos, videos, or charts.6
    The dark theme is applied by default. Choose the contrast theme in Settings > Accessibility > Magnifier. Color inversion remains available separately.

Fix 1 change

General improvements and fixes

Gradual rollout

For: Insiders running this build

  • A small set of general fixes and improvements makes the experience better.7

Technical details

Data sheet · Security · Downloads · Components Click to collapse or expand

Data sheet

Released
2026-11-06
Type
Windows Insider build
VersionBuildChannel
— 28020.3445 Beta Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (7)
  1. 1. Windows Search is improving how it understands what you're looking for, including better matching for typos and synonyms. learn.microsoft.com
  2. 2. With this update, each monitor's boundary is respected, and each monitor can have its own zoom percentage. learn.microsoft.com
  3. 3. PDF and non-HTML files downloaded from the web can now be previewed automatically in the Preview pane. learn.microsoft.com
  4. 4. It's faster, more efficient, and features a streamlined design that makes results easier to scan. Inline actions let you quickly complete tasks directly. learn.microsoft.com
  5. 5. Viewport locking keeps that view in place. learn.microsoft.com
  6. 6. Photos, videos, and charts keep their original colors. learn.microsoft.com
  7. 7. This update includes a small set of general improvements and fixes that improve the overall experience for Insiders running this build on their PCs. learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 7 quoted passages
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

A second AI read the text against the sources: correctness 5/5, clarity 4/5, completeness 5/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake