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Announcing Windows 10 Insider Preview Build 21364

This post has been republished via RSS; it originally appeared at: Windows Blog.

Hello Windows Insiders, today we are releasing Windows 10 Insider Preview Build 21364 to Windows Insiders in the Dev Channel.

What’s new in Build 21364

Run Linux GUI applications directly on Windows using the first preview of GUI app support on the Windows Subsystem for Linux (WSL)

The Windows Subsystem for Linux now includes a first preview of support for GUI applications! This means you can now run your favorite GUI editors, tools, and applications, to develop, test, build and run your Linux apps! Please view the video below for a demo: https://www.youtube.com/watch?v=f8_nvJzuaSU For more info on this change please view this blog post.

Task Manager supports Microsoft Edge process classification

We partnered with the Microsoft Edge team to support process classification in Task Manager. This will help you to identify resource consumption under Microsoft Edge. The classification is broken down to several different components like Tabs, Browser processes (Browser, GPU Process, Crashpad), Utility plugins (Utility: Audio Service Extensions), Dedicated & Service workers etc. It also features separate icons for each process to help you identify them including fav icon for website. Head over to this Microsoft Edge blog post for a list of detailed improvements. NOTE: This feature is available to Windows Insiders that are running the latest Microsoft Edge Canary or Dev builds. Insiders can download the latest version here. This feature is also rolling out to a subset of Insiders in the Dev Channel at first, to help us quickly identify issues that may impact performance and reliability. Rest assured they will be gradually rolled out to everyone in the Dev Channel.

Eco mode in Task Manager

Task Manager has a new experimental feature in this build called “Eco mode” which provides users with an option to throttle process resources. It will also help identify apps that are already running in Eco mode. This feature is helpful when you notice an app consuming high resources and would like to limit its consumption so that the system gives priority to other apps which will lead to faster foreground responsiveness and better energy efficiency. Here is how to enable Eco mode for any process:
  1. Open Task Manager.
  2. Click on Processes tab.
  3. Right-click on a child process or an individual process.
  4. Click on “Eco mode” in the context menu to apply throttling.
  5. The status column in the Processes tab should show Eco mode for the process.
This same process also works on the Details tab too. If “Eco mode” is greyed out, then it’s a parent/group process. You can expand the process tree to apply Eco mode on one of its child processes. And if Microsoft Edge (or Chrome) is showing “Eco mode” as enabled but you did not apply it, this is due to both Microsoft Edge and Chrome experimenting with lowering base priority and applying power efficiency APIs to improve performance which is similar to what Task Manager is doing to identify “Eco” efficient apps. You may see other apps with “Eco mode” if they adapt to similar techniques to improve performance. You can submit feedback on these recent Task Manager changes in Feedback Hub under Desktop Environment > Task Manager. NOTE: This feature is rolling out to a subset of Insiders in the Dev Channel at first, to help us quickly identify issues that may impact performance and reliability. Rest assured they will be gradually rolled out to everyone in the Dev Channel.

Japanese 50-on touch keyboard

We're excited to introduce a new touch keyboard layout for Japanese, 50-on touch keyboard. 50-on touch keyboard is a popular layout widely used for Kiosk devices in Japan. It allows you to input Japanese texts intuitively without knowing how to compose Hiragana characters. You can switch to 50-on layout from [⚙] > [50-on]. It also provides alphabet and symbol views newly designed specifically for the layout. You may notice some known issues where inserting a full-width space using Shift key doesn't work and typing some characters shows garbled suggestion candidates. We're actively working on addressing them. Thank you for your patience. We're looking forward to your feedback via [Give feedback] menu!

Changes and Improvements

Fixes

Known issues

Important Insider Links

You can check out our Windows Insider Program documentation here, including a list of all the new features and updates released in builds so far. Are you not seeing any of the features listed for this build? Check your Windows Insider Settings to make sure you’re in the Dev Channel. Submit feedback here to let us know if things weren't working the way you expected. If you want a complete look at what build is in which Insider channel, head over to Flight Hub. Please note, there will be a slight delay between when a build is flighted and when Flight Hub is updated. Thanks, Amanda & Brandon
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