Windows 10 version 19640 download
Small preview

Windows 10 build 19640 releases in the Fast ring

The 23rd preview of Windows 10 (build 19640) is available now with minor changes, and here's all you need to know.

Microsoft is now rolling out Windows 10 build 19640 for PCs enrolled in the Fast ring of the Windows Insider Program. This is the preview number 23 available for testers, and it’s a very small update with a couple of changes and improvements.

Windows 10 build 1940, according to the company, Storage sense disable cloud syncing for the Downloads folder. Also, this flight updates the sign-in login to prevent error when accidentally starting with a space trying to type the username.

In addition, Microsoft is also warning about several known issues with build 19640, including Blue Screen of Death (BSoD) with eMMC storage, updates trying to apply for a long time, broken privacy settings, and taskbar preview thumbnails not rendering as expected.

Microsoft is listing the complete set of improvements, fixes, and known issues for Windows 10 Insider Preview build 19640 at the Windows Blog.

Download Windows 10 build 19640

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.