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

Build 28020.3142

Build 28020.3142: Windows Insider Beta Channel, October 2026. Cloud rebuild and more precise Magnifier zoom

In short

Build 28020.3142 is rolling out to Beta Channel Insiders with Cloud rebuild, more precise Magnifier zoom controls, and File Explorer improvements and fixes.

Does it affect you? Applies to: Devices enrolled in the Beta Channel (26H1) and running this build. The changes are rolling out gradually.

Build
28020.3142

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 5 changes

Windows Magnifier

Gradual rollout 2 items

For: Insiders in the Beta Channel

  • You can type an exact zoom percentage in the Magnifier toolbar.1
  • The Settings dropdown includes preset zoom steps from 5% to 400% for quick selection.2

File Explorer

Gradual rollout

For: Insiders in the Beta Channel

  • Folder view customizations, such as sorting and icon size, stay consistent across different access paths and apps.3

File Explorer address bar

Gradual rollout 2 items

For: Insiders in the Beta Channel

  • The address bar accepts paths containing double backslashes and quotation marks.4
    Examples include C:\Users\user and "C:\Users\user".
  • The suggestion dropdown closes consistently after you select an item.5

Fixes 2 changes

File Explorer

Gradual rollout 2 items

For: Insiders in the Beta Channel

  • Text no longer gets repeatedly selected while you rename items in folder views.6
  • Names changed only by letter case appear immediately in local and cloud folder views.7

New feature 1 change

Windows Recovery

Gradual rollout

For: Insiders in the Beta Channel

  • Cloud rebuild reinstalls Windows 11 to a clean, known-good state, even if Windows will not boot. It downloads the Windows image and device drivers from Windows Update, without needing USB media or a custom image.8
    Unlike Reset this PC, Cloud rebuild downloads both the target Windows image and the device's drivers from Windows Update.

Technical details

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

Data sheet

Released
2026-10-02
Type
Windows Insider build
VersionBuildChannel
— 28020.3142 Beta Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (8)
  1. 1. Magnifier now gives you more control over how you zoom. You can type an exact zoom percentage directly in the Magnifier toolbar to land on precisely the level you need. learn.microsoft.com
  2. 2. We've also added preset step increments (5%, 10%, 25%, 50%, 100%, 150%, 200%, and 400%) to the Settings dropdown, so you can jump to common levels in a single click. learn.microsoft.com
  3. 3. Improved File Explorer to keep folder view customizations, such as sorting and icon size preferences, consistent across different access paths and apps. learn.microsoft.com
  4. 4. The address bar now supports paths containing double backslashes and quotation marks, for example, C:\Users\user or "C:\Users\user", improving compatibility with a wider range of inputs. learn.microsoft.com
  5. 5. Improved reliability of the address bar suggestion dropdown so it now consistently closes after an item is selected. learn.microsoft.com
  6. 6. Fixed an issue where text would be repeatedly selected while renaming items in folder views. learn.microsoft.com
  7. 7. Fixed an issue where updated names with case-only changes weren't immediately reflected in folder views across local and cloud storage. learn.microsoft.com
  8. 8. We're introducing Cloud rebuild, a new recovery option that restores a Windows 11 PC to a clean, known-good state by performing a full OS reinstall, even when Windows won't boot. learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 8 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