Skip to the content
The Update Bureau
Windows 11 Windows 11 Insider 25H2 Insider Preview, Beta Channel
Windows Insider

Build 26220.8340

Build 26220.8340: Windows Insider Beta Channel, May 2026. Share app suggestions reach AAD users; VM CPU speeds corrected

In short

Beta Channel Insiders get app suggestions in Windows Share, GB sizing for drives and volumes, saved Task Scheduler column widths, and a fix for CPU speed readings on virtual machines.

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

Build
26220.8340

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 2 changes

Storage

Gradual rollout

For: Insiders in the Beta Channel

  • You can specify sizes in GB, rather than only MB, when creating a Dev Drive or changing a volume size in Settings > System > Storage.1

Task Scheduler

Gradual rollout

For: Insiders in the Beta Channel

  • Task Scheduler keeps task-list column widths across sessions.2

Fix 1 change

Task Manager

Gradual rollout

For: Insiders using virtual machines

  • The Performance page shows accurate CPU speeds for virtual machines after they resume from hibernation, rather than sometimes showing unexpectedly high values.3

New feature 1 change

Windows Share

Gradual rollout

For: AAD account users in the Beta Channel

  • Windows Share can suggest apps to install for AAD accounts. You can turn promotional app recommendations on or off in its settings.4

Technical details

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

Data sheet

Released
2026-05-01
Type
Windows Insider build
VersionBuildChannel
— 26220.8340 Beta Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (4)
  1. 1. when creating a Dev Drive to now support specifying the size in GB instead of only MB. This has also been added when changing the size of volumes under Settings > System > Storage. learn.microsoft.com
  2. 2. Task Scheduler will now persist column width adjustments in task list view across sessions. learn.microsoft.com
  3. 3. 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
  4. 4. Previously available only to MSA users, this experience now extends to AAD accounts, bringing greater flexibility and convenience. You’re also in control, with a simple setting to turn promotional app recommendations on or off. learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 4 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