Soon after rolling out build 20277 alongside build 21277, Microsoft is now rolling out Windows 10 build 20279 for devices enrolled in the Dev Channel of the Windows Insider Program. This is the preview number 52 available to testers, and it is a small update without new features or fixes.
Windows 10 build 20279 includes the same changes as build 20277 in the FE_RELEASE branch, but the company said that it wanted to test the ability to quickly deploying another release for compatible devices. If you have already installed build 21277, you will not receive a notification to download and install this flight. Microsoft is working on different builds for RS_PRERELEASE branch after the holidays.
In addition, the company is warning about several issues, including problems with the Manage Disks and Volumes that does not display drives, error 0x80070426 when using their Microsoft account to sign into various apps, updates taking a long time, and more.
Microsoft is listing the complete set of improvements, fixes, and known issues for Windows 10 Insider Preview build 21279 at the Windows Blog.
Download Windows 10 build 20279
The build 20279 preview is available immediately through the Dev Channel, and it will install automatically, but you can always get it manually 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.