The Update BureauBuild 28120.2387: Windows Insider Experimental Channel, July 2026. Taskbar can move to any screen edge and use smaller icons
Adds taskbar position and size options, a K-12 upgrade path to Pro Education, and fixes for File Explorer and Outlook.
Does it affect you? Applies to: Devices enrolled in the Windows Insider Experimental (26H1) Channel. The Pro Education upgrade path is for Insiders in K-12 education environments.
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 3 changes
Taskbar — Alternate Taskbar Position
For: Insiders in the Experimental Channel
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You can move the taskbar to the bottom, top, left, or right edge of the screen. Some features are still unsupported or in progress in alternate positions.1
Touch gestures, Search box, and Ask Copilot support in alternate locations is in progress. Auto-hidden taskbar and touch optimized taskbar are not yet supported.
Taskbar — Smaller Taskbar
For: Insiders in the Experimental Channel
-
A smaller taskbar option reduces icon size and taskbar height, leaving more room for apps.2
Go to Settings > Personalization > Taskbar > Taskbar behaviors > Show smaller taskbar buttons and set it to Always.
EDU
For: Insiders in K-12 education environments
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Eligible K-12 education Insiders can upgrade Windows 11 Home devices to Pro Education at no additional cost. The upgrade is one-way; returning to Windows Home requires a clean OS reinstall.3
Sign in with a local account, launch an elevated Command Prompt and run
Clipupgrade.exe, then sign in with the K-12 organization account to validate eligibility. The upgrade completes after a restart.
Fixes 2 changes
Improvement 1 change
Taskbar settings
For: Insiders in the Experimental Channel
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Taskbar settings are being improved to make resizing easier.6
These enhancements are currently in progress.
Technical details
Data sheet · Security · Downloads · Components Click to collapse or expand
Data sheet
- Released
- 2026-07-06
- Type
- Windows Insider build
| Version | Build | Channel |
|---|---|---|
| — | 28120.2387 | Experimental Channel |
Security
No vulnerabilities are listed for this update.
Sources
Cited passages from Microsoft's official notes (6)
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1.
You can now change the position of taskbar on your screen.
learn.microsoft.com -
2.
When set to Always, both the icons and the taskbar height become smaller.
learn.microsoft.com -
3.
Windows Insiders in K-12 education environments can now experience a seamless upgrade path from Windows 11 Home to Windows 11 Pro Education edition, at no additional cost.
learn.microsoft.com -
4.
Fixed an issue where the OneDrive shortcut in File Explorer stops working when File Explorer is run in administrative mode.
learn.microsoft.com -
5.
If you were having issues with Outlook not responding to the close button last week, that should be addressed now.
learn.microsoft.com -
6.
We're also working on improving taskbar settings to make resizing easier; these enhancements are currently in progress.
learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 6 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 5/5, 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