Windows Insider Blog:
As a reminder, these release notes apply to those who are in the Experimental (26H1) channel.
Changes and improvements gradually being rolled out
- This update includes a small number of minor bug fixes and improvements.
[Accessibility]
- This update improves caption style responsiveness by redrawing captions immediately for caption style changes. If no current caption is visible, a sample caption string is displayed.
Audio
- This update improves the reliability of the inbox HD Audio driver.
Reminder for Windows Insiders in the Experimental (26H1) channel
- These builds can be unstable and may be released with limited documentation.
- Many features in the Experimental (26H1) channel are rolled out using Controlled Feature Rollout technology, starting with a subset of Insiders and ramping up over time as we monitor feedback to see how they land before pushing them out to everyone in this channel.
- The desktop watermark shown at the lower right corner of the desktop is normal for Windows Insider pre-release builds.
- Some features in active development we preview with Windows Insiders may not be fully localized and localization will happen over time as features are finalized. As you see issues with localization in your language, please report those issues to us via Feedback Hub.
Source:
Windows 11 Insider Experimental (26H1) Preview Build 28120.2315 - Windows Insider Program
Release notes for Windows 11 Insider Experimental (26H1) Preview Build 28120.2315
learn.microsoft.com
Announcing new builds for 19 June 2026, version 26H2 for Experimental
Hello Windows Insiders, We have new releases today with builds across Beta and Experimental, including Windows 11, version 26H2 for Experimental. Windows 11, version 26H2 Windows 11, version 26H2 represents our yearly second half
blogs.windows.com
Check Windows Updates
UUP Dump:
64-bit ISO download:
Select language for Windows 11 Insider Preview Quality Update (28120.2315) amd64
Select language for Windows 11 Insider Preview Quality Update (28120.2315) amd64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.
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ARM64 ISO download:
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Select language for Windows 11 Insider Preview Quality Update (28120.2315) arm64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.
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UUP Dump - Download Windows Insider ISO
UUP Dump is the most practical and easy way to get ISO images of any Insider Windows 10 or Windows 11 version, as soon as Microsoft has released a new build. UUP Dump creates a download configuration file according to your choices, downloads necessary files directly from Microsoft servers, and...
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