Microsoft Windows 10 Developer Preview 21337 released: 1000+ games with automatic HDR, virtual desktop improvements and more

According to the Microsoft blog, Microsoft released the Windows Insider build 21337 system update for the Dev channel. This time it brings a new automatic HDR function for PC games, some improvements to the Windows virtual desktop, and even files The resource manager has a new layout.

Reorder and customize virtual desktops

Microsoft said it has heard feedback from users asking for more control over virtual desktops. Starting from Build 21337, it will bring the function of reordering and customizing the background for each virtual desktop of the user. You can access your virtual desktop through the task view (Win + Tab).

The virtual desktop can help you cognitively separate different tasks on the PC, including helping to create the separation of work and life. They can be swapped into views, allowing you to transfer work from one desktop to another. You can switch between virtual desktops instead of opening multiple windows for multitasking.

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Here are the steps you can take to try these new features.

Change the virtual desktop background:

  • Under “Settings”> “Personalization”> “Background”, left-click on the background to change the background of the active virtual desktop.
  • Right-click on the background on the settings page, and there is a new option to change the background of a specific virtual desktop.
  • Once you make the changes, you will see the new background when you switch to the virtual desktop and in the preview thumbnail in the task view.

Rearrange virtual desktops:

  • Enter the task view (via Win + Tab) and create multiple new virtual desktops.
  • Drag and drop a virtual desktop to another position in the list in the task view.
  • Right-click the virtual desktop thumbnail in the task view, and select “Move Left” or “Move Right” in the context menu to move the desktop to another location.
  • Use keyboard navigation to set the focus to the desired virtual desktop in the task view, and then press ALT + Shift + left/right arrows to move it in any direction in the list.

PC game automatic HDR preview

When you enable HDR games on your PC, you will automatically get awesome HDR visual effects on more than 1,000 additional DirectX 11 and DirectX 12 games.

File Explorer layout update

The default layout of File Explorer adds extra padding between elements. For users who prefer more dense information layout, there is a setting called “Use the compact mode” in “View Options”, which will restore the classic layout of File Explorer. The user experience of switching this setting has not yet been finalized. The filling level is designed to better align with the modern (XAML) experience. This will also make the work of the file explorer easier when using a touch screen.

Subtitle settings update

Due to feedback from customers and Windows Insiders, Microsoft is updating the subtitle settings in the latest Insider Preview version. To get started, go to “Settings”> “Ease of Use”> “Listening”> “Subtitles”.

Please note that in this version, the option to discard changes may not work as expected-Microsoft is working hard to fix it.

Built-in application update

Microsoft said that we are making some changes to the existing built-in applications and adding some new applications.

Notepad has now been updated through the Microsoft Store:

Notepad can now be updated in addition to major operating system updates through the Microsoft Store. It also has a new icon and has been promoted from the Windows accessories folder to its place in the Start menu.

Windows Terminal is now a built-in application:

Windows Terminal is now a built-in application. Windows Terminal is a modern, fast, efficient, powerful and efficient terminal application for users of command-line tools and shells (such as Command Prompt, PowerShell and Windows Subsystem for Linux (WSL)). Its main features include multiple tags, panes, Unicode and UTF-8 character support, GPU-accelerated text rendering engine, and custom themes, styles and configurations. Updates to Windows Terminal will continue through the Microsoft Store.

Power Automate Desktop is now a built-in application:

Power Automate Desktop is now a built-in application. With Power Automate Desktop, you can imitate user interface actions such as clicking and keyboard input to automate Web and desktop applications on the Windows desktop. You can also combine these operations with the support of predefined applications (such as Excel) to help automate repetitive tasks. You can find Power Automate in the Windows accessories folder of the “Start” menu. At Microsoft Ignite earlier this month, Microsoft announced that Power Automate Desktop will be available to Windows 10 users for free.

Note: Power Automate Desktop is not yet available for ARM PC.

WordPad integration update:

Microsoft said that it has made some small changes to make Word or Notepad the preferred text editor/viewer for starting text file types in Windows, but if WordPad is your preferred text editor, it still Available.

Changes and Improvements

  • We are now rolling out the new IME candidate window design to all Windows Insiders in the Dev Channel using Japanese, Chinese Traditional, and Indic IMEs. We’ll let you know once the rollout for the remaining IMEs increases.
  • We’re updating the emoji panel (WIN + Period) to support searching in more languages, including Amharic, Belarus, Cherokee, Filipino, Faroese, Icelandic, Khmer, Mongolian (Cyrillic script), Burmese, Sindhi, Serbian (Cyrillic script), Serbian (Latin script), Swahili, Thai, Turkmen, Tonga, Uzbek (Latin script), and Cantonese (Traditional). Please continue sharing feedback about the emoji search results in the Feedback Hub under Input and Language > Emoji Panel.
  • Live previews for websites pinned to the taskbar from Microsoft Edge are now rolling out for all Insiders.
  • [ADDED] We have moved the settings for showing Windows Ink Workspace, Touch Keyboard button, and Task View from right-clicking on Taskbar to Settings > Personalization > Taskbar.


  • We fixed a DWM memory leak impacting Insiders in recent flights.
  • We fixed an issue resulting in errors for some Insiders when trying to launch Settings via URI, including when using the Display Settings and Personalization options when right clicking the desktop.
  • We fixed an issue where if you click on the Advanced Options page under Settings > Update & Security > Windows Update would crash Settings in the previous flight.
  • We fixed a set of issues causing crashes in many x64 apps on ARM64, particularly in scenarios involving video or DRM content. Examples of x64 apps no longer crashing include Microsoft Translator, BlueJeans, The CW, Alexa, Astroneer, and Epic Games Launcher.
  • We fixed an issue that could result in the Windows Security icon in the taskbar saying an action was needed, but the app had no actions to take.
  • We fixed an issue that could result in the Windows Security icon in the taskbar being unresponsive.
  • We fixed an issue in recent flights that could result in some games freezing after locking and unlocking your PC while the game was in full screen mode. This issue may also have resulted in freezes after ALT + Tab.
  • We fixed an issue in recent flights resulting in flickering when hovering over icons and buttons in certain apps.
  • We fixed an issue in recent flights for some Insiders with domain joined devices where their credentials for apps and websites would unexpectedly be lost on upgrade.
  • We fixed an issue resulting in some Insiders noticing that System File Checker (SFC) tool would erroneously saying it found corrupt files the first time it was run after each upgrade.
  • We fixed an issue causing certain UPS to show up in Device Manager with error code 43.
  • We fixed an issue that could result in werfault.exe crashes.
  • We fixed an issue in recent builds resulting in some insiders not being able to resume their devices from sleep or experiencing a bug check with the error IRQL_NOT_LESS_OR_EQUAL.
  • We fixed an issue resulting in some Insiders unexpectedly seeing a Bitlocker recovery screen after upgrading to recent Dev Channel builds.
  • We fixed a ctfmon.exe crash impacting the reliability of voice typing (WIN + H).
  • We fixed a ctfmon.exe crash that could occur if you switched to a Microsoft IME while in a 3rd party IME reconversion session.
  • We fixed an issue in recent builds that could result in Search not opening after clicking the search box in the taskbar.

Known issues

  • We’re looking into reports of the update process hanging for extended periods of time when attempting to install a new build.
  • We’re working on enabling the new taskbar experience for existing pinned sites. In the meantime, you can unpin the site from the taskbar, remove it from the edge://apps page, and then re-pin the site.
  • [News and interests] We’re addressing an issue where news and interests may not be available when signing into Windows without internet access but returns when online.
  • [News and interests] Sometimes the news and interests flyout cannot be dismissed with pen.
  • [ARM64] Insiders who installed the preview version of the Qualcomm Adreno graphics driver on the Surface Pro X may experience reduced brightness of the display. This issue is fixed with an updated version of the preview graphics driver at If you are experiencing this issue, please see the feedback collection for more information.
  • We’re working on a fix for an issue where some devices with Realtek network adapters running driver version may experience intermittent loss of network connectivity.
  • We are working on the fix for an issue where on some high-refresh-rate monitors, games will only run at 60Hz. Variable-refresh-rate monitor scenarios may also result in tearing.
  • The network flyout on the login screen doesn’t open on this build, which will prevent you from connecting to a new network before logging in. If your account is in a state that requires internet to log in, you can work around the issue by plugging in Ethernet, getting the device in range of a previously configured Wi-Fi network, or logging in with any other available account first.
  • We are working on the fix for an issue Insiders reported in the previous flight where devices with certain NVMe drives may experience disk resets or WHEA_UNCORRECTABLE_ERROR bugchecks. If you were impacted by this on Build 21332, you may want to pause updates.
  • We’re investigating reports of an issue with some devices receiving DPC_WATCHDOG_ERROR bugchecks. If you were impacted by this on Build 21332, you may want to pause updates.

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.

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