- Microsoft released Windows 11 build 29599 for Feature Platforms and build 28020.2207 for 26H1 in the Experimental channel.
- These preview builds don’t introduce anything new beyond bug fixes and undisclosed improvements.
Microsoft is releasing Windows 11 build 29599 for the “Feature Platforms” version and Windows 11 build 28020.2207 for the 26H1 version through the Experimental channel, delivering incremental changes and fixes.
According to the official changelog, “Windows 11 Insider Preview Quality Update (29599)” introduces platform changes as Microsoft transitions the operating system to a new active development build.
In addition, the company fixed an issue that caused some users to incorrectly see a message claiming they weren’t connected to the internet when signing in to their Microsoft account in certain apps.
Microsoft also improved CPU speed reporting for virtual machines in Task Manager. After resuming from hibernation, the “Performance” page will no longer display unexpectedly high processor speed values.
As part of build 28020.2207 (Experimental experience for version 26H1), the company is adding a small number of undisclosed bug fixes and improvements.
Other details
It’s important to clarify that Windows 11 26H1 is not a feature update for existing devices. The software giant has explicitly confirmed that version 26H1 is not an upgrade path for computers running Windows 11 25H2 or any earlier release.
This release is designed exclusively for new ARM64 hardware and will ship only on next-generation computers, starting with devices powered by Snapdragon X2 Plus, Elite, and Extreme processors. Systems based on Intel or AMD platforms will never receive Windows 11 26H1 through Windows Update or any other supported upgrade channel.
Preview build download
To download and install this Windows 11 build, enroll your devices in the Experimental experience through the “Windows Insider Program” settings from the “Update & Security” section. Once you enroll the computer in the program, you can download the build from the “Windows Update” settings by turning on the “Get the latest updates as soon as they’re available” option and clicking the “Check for Updates” button.
Alternatively, you can also download the ISO files from the Windows Insider Preview Downloads page. Specific preview builds are available for a limited time only.
Mauro Huculak is a Windows How-To Expert and founder of Pureinfotech in 2010. With over 22 years as a technology writer and IT Specialist, Mauro specializes in Windows, software, and cross-platform systems such as Linux, Android, and macOS.
Certifications: Microsoft Certified Solutions Associate (MCSA), Cisco Certified Network Professional (CCNP), VMware Certified Professional (VCP), and CompTIA A+ and Network+.
Mauro is a recognized Microsoft MVP and has also been a long-time contributor to Windows Central.
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