- Microsoft released Windows 11 build 29595 for Feature Platforms and build 28020.2149 for 26H1 in the Experimental channel.
- Build 29595 focuses on platform changes tied to a new active development branch.
- Build 28020.2149 improves Explorer reliability when closing the input switcher and switching virtual desktops.
Microsoft is releasing Windows 11 build 29595 for the “Feature Platforms” version and Windows 11 build 28020.2149 for the 26H1 version through the Experimental channel, delivering new features, incremental changes, and fixes.
According to the official changelog, “Windows 11 Insider Preview Quality Update (29595)” only introduces platform changes as part of moving to a new active development build.
As part of build 28020.2149 (Experimental experience for version 26H1), the company is improving the reliability of explorer.exe when closing the input switcher and switching between virtual desktops.
On the storage side, Microsoft updated the Dev Drive creation experience to support specifying storage sizes in gigabytes instead of only megabytes. The same improvement is now available when resizing volumes from Settings > System > Storage.
In addition, the company updated the Times New Roman font family to improve the rendering of combining diacritical marks across Greek and Cyrillic scripts. The change enhances text readability and visual consistency by fixing character positioning issues for users working with those languages.
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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