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

Build 28120.2630

Build 28120.2630: Windows Insider Experimental Channel, July 2026. Touchpad gesture controls and network backup fixes

In short

Adds touchpad gesture options, changes update and hibernation behavior, and fixes several backup, File Explorer, and input issues.

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

Build
28120.2630
Review notes Additional details from the official release notes (2) Read notes
  • What changes Repeated scrolling increases scrolling speed, helping users move quickly through long documents. The page does not specify a setting that controls the increase.
  • What changes The DFS-drive issue could cause a Preview warning or add Mark of the Web to copied files; this update addresses that issue.

The official sources are linked at the end of the page.

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 4 changes

Windows Update

Gradual rollout

For: Insiders in the Experimental Channel

  • Driver, .NET, and firmware updates are coordinated with the monthly quality update to reduce the update experience to one monthly restart.1

Certificate renewal for Windows Insiders

Gradual rollout

For: Windows Insiders

  • This build includes a renewed flight certificate. Update to this build or a later one containing the renewed certificate before August 11, 2026, when the current certificate expires.2
    The flight certificate helps Insider devices remain on supported builds and continue receiving future Insider Preview updates.

Adaptive hibernate policy

Gradual rollout

For: Insiders in the Experimental Channel

  • Devices resume from Modern Standby more often without hibernating, while preserving more battery at low charge. They hibernate less above 80% battery and sooner below 10%.3

Input

Gradual rollout

For: Insiders using voice typing

  • Voice typing settings for automatic punctuation and the launcher persist better.4

Fixes 3 changes

Storage

Gradual rollout

For: People backing up to SMB network shares

  • File History automatic backups to SMB network shares work again instead of failing with a false invalid-credentials error.5

File Explorer

Gradual rollout

For: People using DFS mapped drives

  • Files on a DFS mapped drive are no longer incorrectly treated as internet files after a device reconnects to the network. This prevents an unexpected warning in Preview and an unexpected Mark of the Web on copied files.6
    The issue occurred when the device started while disconnected from the network and later reconnected.

Input

Gradual rollout
  • The mouse cursor no longer repeatedly blinks for some Insiders after recent flights.7

New features 4 changes

Windows Update

Gradual rollout

For: Insiders in the Experimental Channel

  • You can extend update pauses as many times as you need.8

Touchpad

Gradual rollout 3 items

For: Precision touchpad users

  • You can set the baseline speed for touchpad scrolling and zooming.9
    Some WinUI3-based interfaces need newer WinAppSDK versions for complete functionality; the changes are being brought to versions 1.8 and 2.0.
  • Repeated scrolling can accelerate, helping you move quickly through long documents.10
    The accelerated scrolling setting controls the speed increase during repeated scrolling.
  • Touchpad gesture capabilities include automatic scrolling and optional single-finger scrolling.11

Technical details

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

Data sheet

Released
2026-07-31
Type
Windows Insider build
VersionBuildChannel
— 28120.2630 Experimental Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (11)
  1. 1. We are starting by coordinating driver, .NET, and firmware updates to align with the monthly quality update, reducing the update experience to a single monthly restart. learn.microsoft.com
  2. 2. The current flight certificate expires on August 11, 2026, so please update your device to this build or a later one containing the renewed flight certificate before that date. learn.microsoft.com
  3. 3. Noticeable changes include less hibernation while the battery is above 80% and hibernating sooner when the battery is below 10%. learn.microsoft.com
  4. 4. Improved persistence of voice typing settings for automatic punctuation and launcher. learn.microsoft.com
  5. 5. This update fixes an issue that affects File History automatic backups to network shares using Server Message Block (SMB). Backups didn't work because Windows showed a false "invalid credentials" error when connecting to SMB shares. learn.microsoft.com
  6. 6. This could cause File Explorer's Preview pane to display the message, "The file you are attempting to preview could harm your computer," or cause files copied from the DFS drive to receive an unexpected Mark of the Web. learn.microsoft.com
  7. 7. Fixed an issue causing the mouse cursor to blink repeatedly for some Insiders after the latest flights. learn.microsoft.com
  8. 8. We're also adding the ability to extend update pauses as many times as you need. learn.microsoft.com
  9. 9. Scroll and zoom speed: Control the baseline speed for these gestures. learn.microsoft.com
  10. 10. Accelerated scrolling: Repeatedly scrolling increases their speed, allowing quick traversal of long documents. learn.microsoft.com
  11. 11. Touchpad improvements bring new gesture capabilities including automatic scrolling, gesture speed controls, accelerated scrolling, and optional single-finger scrolling support. learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 11 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 3/5, 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