Windows 10 build 19631 download
Fixes & improvements

Windows 10 build 19631 releases in the Fast ring

A new preview of Windows 10 becomes available in the Fast ring with minor changes – here's all you need to know.

Microsoft is now rolling out Windows 10 build 19631 for devices enrolled in the Fast ring of the Windows Insider Program. This is the preview number 21 releasing to testers, and it’s a small update with fixes and improvements.

Windows 10 build 19631, according to the company, updates the configuration of Windows Hello to make sure it works well with 940nm wavelength cameras, and Windows Sandbox WSB files are now case insensitive.

As for fixes, this flight addresses issues with IIS configuration, connected standby, and remote desktop.

Since build 19559, Windows 10 included the ability to install Hyper-V on ARM64 devices such as the Surface Pro X, and with this build, Microsoft is making the ARM64 VHDX with build 19624 available for download to allow users to test the feature.

Microsoft is listing the complete set of improvements, fixes, and known issues for Windows 10 Insider Preview build 19631 at the Windows Blog.

Download Windows 10 build 19631

The preview is available immediately through the Fast ring. This preview build will download and install automatically on your computer, but you can always force the update from Settings Update & security > Windows Update, and clicking the Check for updates button.

You can learn more about all the changes available in the current development process of Windows 10 in this guide.