Windows 10 Insider Dev 21337.1000 Rs_Prerelease 210312-1502

Good morning, friends! Microsoft has released a new Windows 10 pre-build number 21337 for Windows Insider program members using the Dev channel.

Previous Update

Full build number: Windows 10 Insider Dev 21337.1000 Rs_Prerelease 210312-1502

We would let you that the Dev channel can contain quite unpleasant errors if you are a beginner. If you need more establishment, we recommend switching to the Release Preview channels or Beta (Late access).

Windows 10 Insider Dev 21337.1000 Rs Prerelease 210312 1502
Windows 10 Insider Dev 21337.1000 Rs Prerelease 210312 1502


Reordering and customizing virtual desktops

Insiders have repeatedly asked Microsoft to expand its control over virtual desktops, and now this opportunity has appeared. Starting with Build 21337, users can change the order of virtual desktops in the list, as well as set a different wallpaper for each of the desktops. You can still access the list of virtual desktops through the “Task View” (WIN + Tab).

Task View WIN Tab vd right click
Task View WIN Tab vd right click

Virtual desktops allow you to seamlessly differentiate between different tasks on your PC, including helping to separate work and personal health. You can also easily transfer windows between created desktops. Instead of having to switch between multiple open windows, you can simply switch between virtual desktops.

Virtual desktops dragdrop
Virtual desktops dragdrop

Change the virtual Desktop background:

  • Under Settings – > Personalization – > Background, left-click on the image to change the background for the active virtual desktop.
  • Right-clicking on an image on this page will allow you to set it as the background for a specific desktop.
  • After these actions, you will see the new wallpaper will be displayed both on the desktop thumbnail in the “Task View”, and directly on the desired virtual desktop.

Reordering virtual desktops:

  • Open the “Task View” (WIN + Tab) and create several new virtual desktops.
  • Drag any desktop thumbnail to another location in the list.
  • Right-click on the thumbnail, select “Move Left” or “Move Right” from the context menu to move the desktop to another location in the list.
  • Use the keyboard to set the focus to the desired desktop thumbnail, then press Alt + Shift + or to move the desktop in the appropriate direction.

Auto HDR Preview for PC

Microsoft is introducing a preview of the Auto HDR feature for PC gaming. If your device supports HDR, then after enabling this feature, you can enjoy stunning HDR visuals in more than 1000 games with DirectX 11 and DirectX 12 support. More information can be found on the DirectX blog at this link.

Updated layout of the ” Explorer»

The “Explorer” layout, which is used by default, has received additional margins between the elements. If you prefer to use an informative layout, you can always switch to it using the “Use compact mode” option in the settings. The user interface for this switch will be further developed. The new layout is designed to be more consistent with modern XAML interfaces. This should also make it easier to work with the “Explorer” on touch-screen devices.

file explorer layout update
file explorer layout update

Updating subtitle settings

Based on insider feedback, Microsoft has updated the subtitle settings page under Settings – > Accessibility – > Hearing -> Hidden Subtitles.


The undo changes option may not work correctly. Engineers are working on a fix.

Changes related to pre-installed apps

Notepad can now be updated via the Microsoft Store without waiting for an OS update. It has received a new icon and now appears as a normal application in the Start menu, and not in the “Standard-Windows” folder.


Now Windows Terminal will be pre-installed in the operating system. Windows Terminal is a modern, fast, efficient, powerful, and productive system that integrates tools such as Command-Line, PowerShell, and Windows Linux (WSL) Windows Subsystem. Supports tabbed interface, Unicode and UTF-8 characters, GPU-based text rendering, custom themes, styles and settings. Windows Terminal updates will still be distributed through the Microsoft Store.

Windows Terminal
Windows Terminal

Power Automate Desktop will now be pre-installed in Windows 10. Power Automate Desktop allows you to automate routine tasks in desktop and web applications by simulating mouse clicks and keyboard input for user interfaces. You can combine these actions to automate repetitive tasks. The Power Automate Desktop application can be found in the “Standard-Windows” folder in the Start menu. The app is free.


Changes and Improvements

  • The new IME candidate window design becomes available to all insiders on the Dev channel using Japanese, Chinese Traditional, and Indic IME. The company will inform you additionally when the window becomes available for other IMEs.
  • They have updated the emoji panel (WIN +) to support searches in Amharic, Belarusian, Cherokee, Filipino, Faroese, Icelandic, Khmer, Mongolian (Cyrillic), Burmese, Sindhi, Serbian (Cyrillic), Serbian (Latin), Swahili, Thai, Turkmen, Tongan, Uzbek (Latin), and Cantonese (Traditional).
  • A preview of websites from Microsoft Edge pinned to the taskbar is now available to all insiders on the Dev channel.

Bug Fixes

  • Fixed a memory leak in the DWM that was observed on previous builds.
  • Fixed an issue that caused errors when trying to open ” Options “using a URI, including when using the” Screen Options “and” Personalization ” options in the desktop context menu.
  • Fixed an issue that caused the Settings app to crash in the previous build when clicking on the “Advanced Settings” item in the “Update and Security” -> “Windows Update” section.
  • Fixed several issues that caused crashes in many ARM64-based x64 applications, especially in scenarios involving video or DRM content. Apps like Microsoft Translator, BlueJeans, The CW, Alexa, Astroneer, and Epic Games Launcher should now run smoothly.
  • Fixed an issue where the “Windows Security” icon on the taskbar could indicate the need for action on the part of the user, but nothing was suggested in the application.
  • Fixed an issue where the Windows Security icon on the taskbar would not respond to clicks.
  • Fixed an issue that occurred in previous builds that could cause some games to freeze after locking and then unlocking the computer if the game was running in full-screen mode. This problem could also cause the game to freeze after using the Alt + Tab combination.
  • Fixed an issue that occurred in previous builds that caused the cursor to flicker when hovering over icons and buttons in some applications.
  • Fixed an issue that occurred in previous builds that caused app and website credentials to be unexpectedly lost on some domain-connected devices after an update.
  • Fixed an issue where the System File Checker (SFC) utility would incorrectly report the detection of corrupted files when the scan was first to run after each system update.
  • Fixed an issue that caused some UPS to display in the” Device Manager ” with error code 43.
  • Fixed an issue that could cause the system to crash werfault.exe.
  • Fixed an issue that occurred in previous builds that caused some insiders to be unable to wake devices from sleep mode or to encounter a GSOD with the IRQL_NOT_LESS_OR_EQUAL error.
  • Fixed an issue where some insiders unexpectedly observed the BitLocker recovery screen after upgrading to previous builds on the Dev channel.
  • Fixed a crash in operation ctfmon.exe, which affected the stability of voice typing (WIN + H).
  • Fixed a crash in operation ctfmon.exe, which could occur if you switched to Microsoft IME while transcoding was running in a third-party IME.
  • Fixed an issue that occurred in previous builds where the Windows Search window would not open after clicking on the search field in the taskbar.

Known Issues:

  • We are investigating reports that the system update process may hang for a long time when trying to install a new build.
  • Developers are working to enable a new feature of the taskbar on already pinned websites. However, you can unpin the site in the taskbar, remove it from the Edge: // apps page, and re-pin it.
  • [News and Interests] We are investigating an issue where the News Interests widget may not be available when you log in to Windows without an Internet connection, but reappears when you connect to the network.
  • [News and interests] Sometimes the pop-up window of news and interesting information cannot be closed with a pen.
  • [ARM64] Insiders installing the Qualcomm Adreno graphics driver preview version on the Surface Pro X can get a dim reflection light. This issue has been fixed in the updated preview version of the graphics driver, which you can find at the link: If you encounter this problem, then check out the topic in the “Feedback Center” at this link.
  • Engineers are working on fixing an issue that may cause some devices with Realtek network adapters with driver version to periodically lose their Internet connection.
  • The Network pop-up menu on the sign-in screen does not open in this build, which means you will not be able to connect to a new network before signing in. If your account requires an Internet connection to log in, you can work around the problem by connecting to Ethernet or moving the device to a previously configured Wi-Fi network. You can also sign in with any other available account.
  • Engineers are working on fixing an issue that occurred in the previous build, which may cause a disk reboot or a GSOD with the WHEA_UNCORRECTABLE_ERROR error on devices with some NVMe drives. If you are affected by the problem, you can stop receiving updates.
  • We are investigating reports that GSOD comes from other devices with a DPC_WATCHDOG_ERROR error. If you are affected by the problem, you can stop receiving updates.
I wish you a Successful Update

I am Sanjit Gupta. I have completed my BMS then MMS both in marketing. I even did a diploma in computer software and Digital Marketing.

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