- Windows 11 build 26220.9587 is rolling out through the Beta channel for version 25H2 as part of Microsoft’s Windows K2 quality initiative.
- Settings gets faster with improvements designed to reduce loading times on the Settings home page in certain scenarios.
- Cloud Rebuild is easier to find with a new entry point under Settings > System > Recovery.
- Unicode 17.0 support expands Windows text shaping with 4,803 new characters and four new scripts.
Microsoft is now rolling out the Windows 11 Insider Preview Quality Update (26220.9587) for version 25H2 via the Beta channel in the Windows Insider Program. This update introduces several accessibility improvements and smaller operating system updates as part of the Windows K2 initiative.
According to the official notes, Windows 11 build 26220.9587 ships with several improvements, including updated Unicode 17.0 support for newly encoded characters and scripts.
Microsoft is improving Settings home page performance to reduce loading times in some scenarios. In addition, the build also adds a new Cloud Rebuild entry point under Settings > System > Recovery, making the recovery option easier to find.
What’s new on Windows 11 update 26220.9587 (Beta)
These are the new features and improvements rolling out in the Beta channel:
Cloud Rebuild gets a new entry point
Windows 11 is adding a new Cloud Rebuild entry point under Settings > System > Recovery, making the feature easier to find and access directly from the Settings app.

Faster Settings home page
Microsoft is improving the Settings home page to reduce loading times in certain scenarios, helping the page open faster when you need to change a setting.
Unicode 17.0 support
Microsoft is updating Windows 11’s text shaping support to Unicode 17.0, helping the operating system correctly display and shape newly encoded characters and scripts. The Unicode 17.0 update adds 4,803 characters, including four new scripts: Beria Erfe, Sidetic, Tai Yo, and Tolong Siki.
The change keeps Windows text support aligned with the evolving Unicode Standard while improving support for languages and writing systems used around the world.
Download Windows 11 update 26220.9587
To download and install these Windows 11 builds, enroll your Devices in the Beta channel 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.



