Microsoft released a new Windows 10 Insider Preview Build 18309 from the 19H1 branch to the Windows Insiders in the fast ring. Though this build does not include long features list, but includes a notable changes to the Windows experience.

If you are a Windows Insider in the Fast ring, check for updates. But before that, check the known issues that still present in this new preview build.

While Microsoft already released the Windows 10 October 2018 Update recently, they have already started working on the next major feature update (code named: 19H1) and have already released few preview builds to the insiders.

Among those new enhancements, the Windows Security app also got some noticeable feature updates in latest Windows 10 build 18305.