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

Build 28020.1921

Build 28020.1921: Windows Insider Experimental Channel, May 2026. Task Manager adds NPU and app-isolation columns

In short

Build 28020.1921 gradually adds Task Manager columns for NPU use and app isolation, and updates Feedback Hub. Insiders in the Canary 28000 series are beginning to move to the Experimental (26H1) channel.

Does it affect you? Applies to: Insiders in the Canary 28000 series, which is transitioning to the Experimental (26H1) channel. The build's changes are for Insiders running this build; some Task Manager columns apply only to PCs with an NPU.

Build
28020.1921

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 6 changes

Windows Insider channel movement

Gradual rollout
  • Insiders in the Canary 28000 series are beginning to move to the Experimental (26H1) channel.1

Feedback Hub

Gradual rollout 5 items
  • Feedback Hub is more reliable.2
  • Feedback Hub gets design, accessibility, and localization refinements.3
  • In Community feedback, people using a non-English language can switch to the English view.4
  • Collection titles and official responses are automatically translated in top languages.5
  • You can again upload files up to 500 MB when submitting feedback.6

Fixes 2 changes

Task Manager

Gradual rollout

For: Insiders using virtual machines

  • Task Manager no longer sometimes shows unrealistically high CPU speeds for virtual machines after they resume from hibernation.7
    Corrects CPU speed display on the Performance page for VMs after resume from hibernate.

Feedback Hub

Gradual rollout

For: Insiders using Feedback Hub

  • Upvote and comment counts for feedback are more accurate.8

New features 3 changes

Task Manager

Gradual rollout 3 items
  • On PCs with an NPU, optional columns show NPU use and NPU engine activity on the Processes, Users, and Details pages. The Details page also gets optional columns for NPU memory use.9
    Adds optional NPU and NPU Engine columns to Processes, Users, and Details, and NPU Dedicated Memory and NPU Shared Memory columns to Details.
  • Neural engines that are part of a GPU appear on Task Manager's Performance page.10
  • Optional columns show which apps are running in an isolated app container.11
    Adds an optional Isolation column to the Processes and Details pages to identify apps running in an AppContainer.

Technical details

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

Data sheet

Released
2026-05-01
Type
Windows Insider build
VersionBuildChannel
— 28020.1921 Experimental Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (11)
  1. 1. we will begin moving users in the Canary 28000 Series Channel to the new Experimental (26H1) channel. learn.microsoft.com
  2. 2. Generally improved reliability. learn.microsoft.com
  3. 3. More tweaks to improve general design fit and finish, accessibility, and localization. learn.microsoft.com
  4. 4. The Community feedback section for non-English now allows you to switch view to English if you’d prefer. learn.microsoft.com
  5. 5. Collection titles and Official responses now will be automatically translated in top languages. learn.microsoft.com
  6. 6. The file upload limit when submitting feedback is back up to 500 MB. learn.microsoft.com
  7. 7. Fixed accuracy of CPU speed display on the Performance page of Task Manager for VMs after resume from hibernate, so it doesn’t sometimes show unexpectedly high unrealistic numbers. learn.microsoft.com
  8. 8. Improved upvote and comment count accuracy for feedback. learn.microsoft.com
  9. 9. New optional NPU and NPU Engine columns are now available on the Processes, Users, and Details pages. learn.microsoft.com
  10. 10. 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. learn.microsoft.com
  11. 11. 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. 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 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