Yesterday Microsoft released Windows 10 Insider Preview Build 17650 to insiders on the Redstone 5 Skip Ahead ring. In this build, Microsoft focused on Windows Defender with a new design to the Windows Defender Security Center and adding Windows Subsystem for Linux (WSL) support to the Windows Defender Firewall.

To see the entire release notes, you can read the this blog post.

Windows Defender Firewall now support WSL

Windows Defender Firewall now support the Windows Subsystem for Linux (WSL). This means that you can create firewall rules that target specific WSL processes like you could already do with Windows processes.

Microsoft also reminded us that Windows Defender Firewall also supports notifications for WSL processes that try to access the Internet.

Also, Windows Defender Firewall now supports notifications for WSL processes. For example, when a Linux tool wants to allow access to a port from the outside (like SSH or a web server like nginx), the Windows Defender Firewall will prompt to allow access just like it would for a Windows process when the port starts accepting connections. This was first introduced in Build 17627.

Windows Defender Security Center Redesign

Microsoft has redesigned the Windows Defender Security Center so that it now uses Fluent Design elements. The screen will now use your customized colors and have the elements better spaced.


Below are the latest fixes and changes in build 17650:

General changes, improvements, and fixes for PC

  • We fixed an issue where File Explorer would always open with the ribbon minimized, rather than remembering how you’d left it.
  • We fixed an…