Insider KB5125726 Windows 11 Insider Experimental (26H1) build 28120.2912 - Sept. 8

Windows 11 Insider Experimental (26H1) build 28120.3002 - Sept. 11

Microsoft Support: Source: Check Windows Updates UUP Dump: 64-bit ISO download: https://uupdump.net/selectlang.php?id=9531141a-6621-4a9a-809b-f92c4599691b ARM64 ISO download: https://uupdump.net/selectlang.php?id=af931639-0571-49cb-8810-aad2ac13c735...

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Changes and improvements gradually being rolled out​

• This update includes a small set of general improvements and fixes that improve the overall experience for Insiders running this build on their PCs.

[Input]​

• Fixed an issue that caused zoom not to work in certain apps when using a touchpad after the latest flights.
• Fixed an issue causing the mouse cursor to move in the wrong direction on portrait monitors for some Insiders after the latest flights.

Known issues​

• We're investigating reports that some games that use Easy Anti-Cheat (EAC) might fail to launch and display the error, "The application was unable to start correctly (0xc000007b)." We're working on a fix and expect the issue to be resolved by the next build.

Reminder for Windows Insiders in the Experimental (26H1) channel​

• These builds can be unstable and might 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 might not be fully localized, and localization will happen over time as features are finalized. As you see issues with localization in your language, report those issues to us via Feedback Hub.
• Check out Flight Hub for a complete look at what build is in which Insider channel.

Announcing new builds for 8 September 2026

Hello Windows Insiders, Today, we’re releasing new Windows 11 Insider Preview builds to the Beta and Experimental channels. New builds this week Select your channel below to view its release notes: Beta:

blogs.windows.com

Windows 11 Insider Experimental (26H1) Preview Build 28120.2912 - Windows Insider Program

Release notes for Windows 11 Insider Experimental (26H1) Preview Build 28120.2912

learn.microsoft.com

Download Official Windows 11 ISO file from Microsoft

This tutorial will show you how to download an official Windows Server or Windows 11 64-bit or ARM64 ISO file from Microsoft. Microsoft provides ISO files for Windows Server and Windows 11 to download. You can use these ISO files to clean install or in-place upgrade Windows 11. The Flight Hub...

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Select language for Windows 11 Insider Preview Feature Update (28120.2912) amd64

Select language for Windows 11 Insider Preview Feature Update (28120.2912) amd64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.

uupdump.net

Select language for Windows 11 Insider Preview Feature Update (28120.2912) arm64

Select language for Windows 11 Insider Preview Feature Update (28120.2912) arm64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.

uupdump.net

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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