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Windows 11 Windows 11 Insider 26H2 Insider Preview, Experimental Channel
Windows Insider

Build 26300.8142

Build 26300.8142: Windows Insider Experimental Channel, March 2026. Touchpad right-click sizing and new Task Manager NPU columns

In short

Adds touchpad right-click sizing, more Task Manager resource details, and a printer-mode icon. It also fixes a Braille issue.

Does it affect you? Applies to: Devices enrolled in the Windows Insider Program in the Dev Channel.

Build
26300.8142
Review notes Additional details from the official release notes (1) Read note
  • What changes The NPU memory columns are for PCs that include an NPU.

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

New features 4 changes

Administrator Protection

Gradual rollout

For: Dev Channel Insiders with the latest-updates toggle on

  • You can turn on Administrator Protection in Windows Security settings. A restart is required.1
    The setting is under Settings > Privacy & security > Windows Security > Account protection.

Touchpad

Gradual rollout

For: Dev Channel Insiders with supported touchpads and the latest-updates toggle on

  • You can choose a default, small, medium, or large right-click zone on supported touchpads.2
    The setting appears only for touchpads with a pressable surface. If a manufacturer's app has customized the setting, the dropdown includes a “Custom” entry that preserves that value.

Task Manager

Gradual rollout

For: Dev Channel Insiders with the latest-updates toggle on

  • Optional Isolation columns show which apps run in an isolated container.3
    The Isolation column is available on the Processes and Details pages and identifies apps running in an AppContainer.

Windows Protected Print Mode

Gradual rollout

For: Dev Channel Insiders with the latest-updates toggle on

  • Print settings show an icon when a printer supports Windows Protected Print Mode.4

Improvements 3 changes

Task Manager

Gradual rollout 3 items
  • Optional columns show NPU and NPU Engine usage for processes, users, and details.5
    The optional NPU and NPU Engine columns are available on the Processes, Users, and Details pages.
  • The Details page can show how workloads use dedicated and shared NPU memory.6
    Optional NPU Dedicated Memory and NPU Shared Memory columns are added to the Details page.
  • The Performance page shows neural engines that are part of a GPU, giving you a fuller view of AI-related activity.7

Fix 1 change

Accessibility

Gradual rollout

For: Dev Channel Insiders with the latest-updates toggle on

  • Braille use works again after an issue affected Insiders in recent builds.8

Technical details

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

Data sheet

Released
2026-03-30
Type
Windows Insider build
VersionBuildChannel
26H2 26300.8142 Experimental Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (8)
  1. 1. we are also now rolling out the ability to enable Administrator Protection in Settings under Privacy & security > Windows Security > Account protection blogs.windows.com
  2. 2. choose how large the right-click zone size is blogs.windows.com
  3. 3. We’re also adding a new optional Isolation column to the Processes and Details pages, allowing you to see which apps are running in an AppContainer. blogs.windows.com
  4. 4. We are adding a new icon to show where a printer supports Windows Protected Print Mode in print settings. blogs.windows.com
  5. 5. New optional NPU and NPU Engine columns are now available on the Processes, Users, and Details pages. blogs.windows.com
  6. 6. The Details page also adds NPU Dedicated Memory and NPU Shared Memory optional columns to give you deeper visibility into how workloads are using NPU resources. blogs.windows.com
  7. 7. Additionally, if there are neural engines that are part of a GPU, they will now appear on the Performance page, providing a more complete view of AI-related system activity. blogs.windows.com
  8. 8. Addressed an issue impacting the use of Braille for Insiders in the last few flights. blogs.windows.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 4/5, 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