[Changelog] Windows 10 Insider Preview Builds Released to Dev Channel or Fast Ring

Microsoft regularly releases Windows 10 testing builds known as Insider Preview builds to people who have opted for these builds. These builds are testing builds (such as Beta, RC, etc) and may contain bugs and issues. Microsoft first tests new features in these builds and when the features are ready, these features are implemented in Windows 10 feature updates which are released to public twice a year.

In past, there were multiple development branches or release channels of Windows 10 Insider Preview builds such as Slow Ring, Fast Ring, Release Preview and Skip Ahead. First the upcoming Windows 10 feature update builds were provided for testing under Fast Ring and when they were thoroughly tested, the builds were released to Insiders under Slow Ring and then Release Preview ring. Skip Ahead was an exclusive development channel for Windows 10 which provided latest Alpha builds of Windows 10 which contained latest features under development. These builds were taken from Microsoft’s active development branch called “RS_PRERELEASE“.

A few months back, Microsoft decided to discontinue “Skip Ahead” branch and Insiders were left with only 3 development channels: Slow Ring, Fast Ring and Release Preview.

Now Microsoft has decided to revamp “Fast Ring” development branch. Microsoft will release latest Windows 10 testing builds from active development branch (RS_PRERELEASE and MN_RELEASE) to Fast Ring similar to Skip Ahead channel. These builds will contain latest features and changes under development. Remember these feature may be or not a part of upcoming Windows 10 feature updates.

Related: Understanding New Windows 10 Insiders Channels: Dev, Beta and Release Preview

So now if you are under Fast Ring branch of Windows 10 Insider Preview program, get ready to test drive early previews of new and latest features which will become part of future Windows 10 feature updates.

Previous changelog: Windows 10 May 2020 Update (Version 2004) Changelog

Following is the list of all Windows 10 Insider Preview builds released to new reorganized “Fast Ring” branch or channel with their features and changes log:

Windows 10 Build 10.0.19536 Changelog:

Build 19536 was the 1st Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on December 16, 2019. This new build arrived via new “RS_PRERELEASE” development branch.

• When optional updates are detected, they will be listed under Settings -> Update & Security -> Windows Update -> View optional updates page.
• Re-releasing the updated Korean IME
• New Family Group setup screen in OOBE (Out-Of-Box Experience) wizard
• Windows RE (Recovery Environment) no longer requires an administrator password to access recovery tools
• Updated the new File Explorer search experience to enable you to remove previous searches via an option if you right click the entry in the drop-down
• Bug fixes and general improvements

Windows 10 Build 10.0.19541 Changelog:

Build 19541 was the 2nd Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on January 08, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Updated Location in-use icon in Taskbar notification area
• Now you can show the architecture of each process in Details tab of Task Manager. You can add it by right-clicking on a column header, choosing Select Columns, and selecting Architecture from the list.
• Bug fixes and general improvements

Windows 10 Build 10.0.19546 Changelog:

Build 19546 was the 3rd Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on January 16, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• New “Graphing Mode” added to Windows Calculator
• Bug fixes and general improvements

Windows 10 Build 10.0.19551 Changelog:

Build 19551 was the 4th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on January 23, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.19555 Changelog:

Build 19555 was the 5th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on January 30, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.19559 Changelog:

Build 19559 was the 6th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on February 05, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.19564 Changelog:

Build 19564 was the 7th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on February 12, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Improvements to Graphics Settings page under “Settings -> System -> Display” page
• Bug fixes and general improvements

Windows 10 Build 10.0.19569 Changelog:

Build 19569 was the 8th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on February 20, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• New app icons
• Bug fixes and general improvements

Windows 10 Build 10.0.19577 Changelog:

Build 19577 was the 9th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on March 05, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• The “Basic” and “Full” diagnostic data options renamed to “Required” and “Optional” under “Settings -> Privacy -> Diagnostics & feedback” page
• New app icon for Windows Security
• Bug fixes and general improvements

Windows 10 Build 10.0.19582 Changelog:

Build 19582 was the 10th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on March 12, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Improvements to Eye Control feature
• Now you can control whether apps can disable screen capture border in privacy settings
• “Set time zone automatically” toggle in Time & Date settings is now automatically greyed out if location has been disabled
• Bug fixes and general improvements

Windows 10 Build 10.0.19587 Changelog:

Build 19587 was the 11th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on March 18, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Improvements to Narrator
• Bug fixes and general improvements

Windows 10 Build 10.0.19592 Changelog:

Build 19592 was the 12th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on March 25, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Tablet posture improvements for 2-in-1 convertible PCs
• Improvements to Windows Search Platform (Indexer)
• Bug fixes and general improvements

Windows 10 Build 10.0.19603 Changelog:

Build 19603 was the 13th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on April 08, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• File Explorer Integration in the Windows Subsystem for Linux (WSL)
• New “User cleanup recommendations” in Storage Settings
• Bug fixes and general improvements

Windows 10 Build 10.0.19608 Changelog:

Build 19608 was the 14th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on April 15, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Now you can search the lists of file types, protocols and apps when setting a default app in Settings app
• Bug fixes and general improvements

Windows 10 Build 10.0.19613 Changelog:

Build 19613 was the 15th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on April 22, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.19619 Changelog:

Build 19619 was the 16th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on April 29, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.19624 Changelog:

Build 19624 was the 17th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on May 06, 2020. This new build arrived via new “RS_PRERELEASE” development branch.

• The new search box in default apps Settings pages has been removed
• Updated VPN connection logic, so that if you disconnect from a VPN network, it will now uncheck the option to auto-connect (similar to how it’s handled for Wi-Fi).
• Updated the text of the Add a Device dialog so the list of examples under Bluetooth includes controllers.
• Updated Optional Updates Available section that appears in Windows Update settings, so that you will now be able to copy the text in case you need it.
• Bug fixes and general improvements

Windows 10 Build 10.0.19628 Changelog:

Build 19628 was the 18th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on May 13, 2020. This new build arrived via new “MN_RELEASE” development branch.

• Added initial support for DNS over HTTPS, so that users can opt into using encryption when Windows makes DNS queries. The feature is off by default.
• The updated version of Korea Microsoft IME returning to the previous one.
• Bug fixes and general improvements

Windows 10 Build 10.0.19631 Changelog:

Build 19631 was the 19th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on May 21, 2020. This new build arrived via new “MN_RELEASE” development branch.

• Updated the configuration of Windows Hello to make sure it works well with 940nm wavelength cameras
• Windows Sandbox WSB files are now case insensitive
• Bug fixes and general improvements

Windows 10 Build 10.0.19635 Changelog:

Build 19635 was the 20th Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on May 28, 2020. This new build arrived via new “MN_RELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.19640 Changelog:

Build 19640 was the 21st Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on June 03, 2020. This new build arrived via new “MN_RELEASE” development branch.

• If your Downloads folder is synced to a cloud provider, the option to have Storage Sense automatically clear out your Downloads folder on a cycle is disabled by default
• If your PC is set up so you need to type in your username when logging in, accidentally starting your username with a space will no longer result in an error
• Bug fixes and general improvements

Windows 10 Build 10.0.19645 Changelog:

Build 19645 was the 22nd Insider Preview build of Windows 10 released to new “Fast Ring” after finishing development of 20H1 builds. It was released on June 10, 2020. This new build arrived via new “MN_RELEASE” development branch.

• Changes to servicing model for the Linux kernel inside of Windows Subsystem for Linux 2 distributions. This build includes this change to remove the Linux kernel from the Windows image, and instead have it be serviced via Microsoft Update, the same way that 3rd party drivers (like graphics, or touchpad drivers) are installed and updated on machines.
• Support for Nested Virtualization on AMD processors is now available
• Bug fixes and general improvements

Windows 10 Build 10.0.20150 Changelog:

Build 20150 was the 1st Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on June 17, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Three new Windows Subsystem for Linux (WSL) features: GPU compute, WSL install and WSL update
• The new search box on the default app settings pages is now available
• The new Korean IME is now available again to use
• Bug fixes and general improvements

Windows 10 Build 10.0.20152 Changelog:

Build 20152 was the 2nd Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on June 24, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.20161 Changelog:

Build 20161 was the 3rd Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on July 01, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Theme-aware tiles in Start Menu
• All tabs opened in Microsoft Edge web browser now appear in Alt+TAB screen. You can change the behavior using Settings -> System -> Multitasking page (How-to Guide)
• New personalized Taskbar layout for new user accounts
• Improvements to notifications toast UI
• Focus Assist notification and summary toast are turned off by default
• More system information added to Settings -> System -> About page. Also links that would open the System page in Control Panel now direct to About page in Settings (How-to Restore Guide)
• When detaching the keyboard on a 2-in-1 device, the notification toast asking for your permission now no longer appears and instead will switch you directly into the new tablet experience. You can change this setting by going to Settings -> System -> Tablet page (How-to Guide)
• To address confusion with some users getting stuck in tablet mode on non-touch devices, the tablet mode quick action has been removed from Action Center on non-touch devices
• Bug fixes and general improvements

Windows 10 Build 10.0.20170 Changelog:

Build 20170 was the 4th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on July 15, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Settings -> System -> Sound -> Manage sound devices page updated to now let you know which device is default, and if not, enable you to set it as your default device or default communication device
• New icon for Settings app
• Temporarily turned off Notepad’s ability to persist open windows across restarts and updates
• An experimental implementation of Transport Layer Security (TLS) 1.3 is enabled by default. IIS/HTTP.SYS have TLS 1.3 enabled by default. SSPI callers can use TLS 1.3 by passing the new crypto-agile SCH_CREDENTIALS structure when calling AcquireCredentialsHanlde. SSPI callers using TLS 1.3 need to make sure their code correctly handles SEC_I_RENEGOTIATE
• Bug fixes and general improvements

Windows 10 Build 10.0.20175 Changelog:

Build 20175 was the 5th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on July 22, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Improvements to pinned sites in Microsoft Edge
• Now you can reset an app to factory settings using “Reset-AppxPackage” command in PowerShell. For example, to reset Calculator app, you can use Get-AppxPackage *calculator* | Reset-AppxPackage command in PowerShell window.
• Bug fixes and general improvements

Windows 10 Build 10.0.20180 Changelog:

Build 20180 was the 6th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on July 29, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Changing the tablet posture logic for 2-in-1 devices to now only apply when using a single screen
• Updating the new folder icon in the Start Menu -> All apps list to be a little smaller so it better aligns with the size of the other icons
• Updated the Search box in the Default Apps settings pages to improve performance
• Bug fixes and general improvements

Windows 10 Build 10.0.20185 Changelog:

Build 20185 was the 7th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on August 05, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Improvements to DNS configurations in Network section of Settings app
• 3D Viewer app moved to Windows Accessories folder in Start menu all apps list
• Bug fixes and general improvements

Windows 10 Build 10.0.20190 Changelog:

Build 20190 was the 8th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on August 12, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• New post-update first run experience via Tips app that highlights the most exciting changes on Windows 10 PC after a major feature update is installed
• Improvements to Graphics Settings page
• Bug fixes and general improvements

Windows 10 Build 10.0.20197 Changelog:

Build 20197 was the 9th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on August 21, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• You can now manage your disks and volumes using “Settings -> System -> Storage -> Manage Disks and Volumes” page
• Removed the new post-update first run experience
• New Web Browsing section in Settings app header
• Bug fixes and general improvements

Windows 10 Build 10.0.20201 Changelog:

Build 20201 was the 10th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on August 26, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.20206 Changelog:

Build 20206 was the 11th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on September 02, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Improvements to Emoji Picker
• New voice typing feature (activate using the keyboard shortcut (WIN+H) or tapping the microphone button on the touch keyboard
• Improvements to touch keyboard design
• Bug fixes and general improvements

Windows 10 Build 10.0.20211 Changelog:

Build 20211 was the 12th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on September 10, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Adding Search to the Default Apps pages in Settings
• Access Linux file systems in the Windows Subsystem for Linux
• Bug fixes and general improvements

Windows 10 Build 10.0.20215 Changelog:

Build 20215 was the 13th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on September 16, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Windows search now supports dark theme
• Bug fixes and general improvements

Windows 10 Build 10.0.20221 Changelog:

Build 20221 was the 14th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on September 23, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• New “Meet Now” icon in Taskbar notification area (system tray) (How-to Remove Guide)
• Windows 10 now shows notification to let you know when an app registers to run at startup (Settings -> Apps -> Startup Apps)
• With most of the launches of the People app coming directly from within the Mail and Calendar apps in Windows 10, the People app no longer appears as a standalone app in Start. It remains as an inbox app and can be launched to manage your contacts from the button in the Mail and Calendar apps.
• Bug fixes and general improvements

Windows 10 Build 10.0.20226 Changelog:

Build 20226 was the 15th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on September 30, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Storage health monitoring to protect user data
• Microsoft is starting to roll out a change that will turn off theme syncing. As part of that, you will no longer see “Theme” as an option in Sync your settings, and changes made to your background will not sync across device. If you have been using theme synchronization, when setting up a new PC or account there will be a one-time download of the last saved synchronized desktop background to %LOCALAPPDATA%\Microsoft\Windows\WallpaperBackup if you need to access it.
• Bug fixes and general improvements

Windows 10 Build 10.0.20231 Changelog:

Build 20231 was the 16th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on October 07, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• New customize device page in Windows Setup (OOBE) wizard
• Better management options for app default file associations
• Bug fixes and general improvements

Windows 10 Build 10.0.20236 Changelog:

Build 20236 was the 17th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on October 14, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• You can now change refresh rate of your display using “Settings -> System -> Display -> Advanced display settings” page
• Bug fixes and general improvements

Windows 10 Build 10.0.20241 Changelog:

Build 20241 was the 18th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on October 21, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Theme-aware splash screens for UWP apps
• Improvements to “Settings -> System -> Storage -> Optimize Drives” page
• Bug fixes and general improvements

Windows 10 Build 10.0.20246 Changelog:

Build 20246 was the 19th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on October 29, 2020. This new build arrived via “FE_RELEASE” development branch.

• Now users can perform automatic Linux distro installation using wsl.exe –install command! This means that users who wish to install the Windows Subsystem for Linux quickly can just type in wsl.exe –install into the command line and then will have a fully set up WSL instance ready to go, including their Linux distro of choice.
• Bug fixes and general improvements

Windows 10 Build 10.0.20251 Changelog:

Build 20251 was the 20th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on November 04, 2020. This new build arrived via “FE_RELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.20257 Changelog:

Build 20257 was the 21st Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on November 11, 2020. This new build arrived via “FE_RELEASE” development branch.

• Updated Start Menu tile theming logic such that the tile background for Win32 apps will no longer adjust based on detected contrast ratio, except in the case of pinned Microsoft Edge PWAs.
• Bug fixes and general improvements

Windows 10 Build 10.0.20262 Changelog:

Build 20262 was the 22nd Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on November 18, 2020. This new build arrived via “FE_RELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.20270 Changelog:

Build 20270 was the 23rd Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on December 03, 2020. This new build arrived via “FE_RELEASE” development branch.

• New “File Skill” feature in Cortana which translates voice commands into direct actions to open and find files
• Using the touch keyboard in a portrait posture on a 2-in-1 touch device now supports split keyboard mode
• The new “Advanced View” checkbox in Optimize Drives is now up and running and checking it will display volumes previously not visible in this window
• Bug fixes and general improvements

Windows 10 Build 10.0.21277 Changelog:

Build 21277 was the 24th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on December 10, 2020. This new build arrived via “RS_PRERELEASE” development branch.

• Windows Insiders with ARM PCs can try out x64 emulation by installing x64 apps from Microsoft Store or from any other location
• Adding Support for Unicode Emoji 12.1 and 13.0
• Updated the animation when opening or closing a window to make the transition smoother
• You can now use the built-in screen snipping experience in Windows (WIN + SHIFT + S) to create a snip of your screen and paste it directly into a folder of your choice in File Explorer to save the screenshot there
• Using the touch keyboard in a portrait posture on a 2-in-1 touch device now supports split keyboard mode
• It’s now possible to uninstall the Snipping Tool. If you choose to uninstall it, it can be reinstalled via the Optional Features page in Settings.
• Adjustments to improve the scaling logic of the graphs in Task Manager’s Performance tab
• Updated Registry Editor so that the Find window, renaming a key, and other places all now support CTRL + Backspace to delete words at a time.
• When using the Delete key or Dismiss button in Action Center to clear groups of notifications, Narrator will now announce that the notification group has been cleared instead of just moving focus to the next notification group.
• Adjusted a few strings in Offline Maps Settings to improve clarity.
• Updated folder logic in Start menu’s all apps list so that if a folder only contains a single item, it will now display that item in place of the folder.
• Bug fixes and general improvements

Windows 10 Build 10.0.21286 Changelog:

Build 21286 was the 25th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on January 06, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• Addition of News and Interests feed to Taskbar (How-to Remove Guide)
• You can now create and manage Storage Spaces using Settings -> System -> Storage page
• Addition of new file system command-line tool “DiskUsage” to enable users to view and query disk space usage via the command line
• Addition of new option that allows users to run any specified Linux command on startup of a WSL distribution
• Improvements to automatic time zone feature
• Bug fixes and general improvements

Windows 10 Build 10.0.21292 Changelog:

Build 21292 was the 26th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on January 13, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• Improvements to news and interests feed in Taskbar
• Bug fixes and general improvements

Windows 10 Build 10.0.21296 Changelog:

Build 21296 was the 27th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on January 21, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• Bug fixes and general improvements

Windows 10 Build 10.0.21301 Changelog:

Build 21301 was the 28th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on January 27, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• Improvements to touch keyboard design
• When you right click locally saved files displayed in jump lists, in addition to Open you will now have the option to Open File Location.
• Bug fixes and general improvements

Windows 10 Build 10.0.21313 Changelog:

Build 21313 was the 29th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on February 12, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• News and Interests feed in Taskbar now supports more locations and languages
• Legacy Microsoft Edge browser replaced by new Chromium-based Microsoft Edge
• New modern design for IME candidate window
• Bug fixes and general improvements

Windows 10 Build 10.0.21318 Changelog:

Build 21318 was the 30th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on February 19, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• When you open clipboard history (WIN+V) and click the 3-dots button next to any text-based entry in your clipboard history, you will now see a “Paste as plain text” option alongside pin and delete. When you use this action in clipboard history, it pastes the text content of the clipboard without its original formatting (font, color, size etc.), allowing it to match the formatting of the destination document.
• The notification when pairing supported Bluetooth devices will now stay on the screen a little longer, given you the chance to interact with it before it goes away.
• Bug fixes and general improvements

Windows 10 Build 10.0.21322 Changelog:

Build 21322 was the 31st Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on February 24, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• The 3D Objects folder will no longer be shown as a special folder in File Explorer after updating to this build. If you need to access this folder, you can do so via typing %userprofile% in File Explorer or through the navigation pane option “Show all folders”.
• [News and interests] The “Reduce taskbar updates” option removed from the context menu.
• The touch keyboard refinements noted in Build 21301 have been removed temporarily to fix some issues. However, the updates to the default keyboard layout on 12″ or larger screens and the candidate bar remain available to everyone in Dev Channel as noted last week with Build 21318.
• Bug fixes and general improvements

Windows 10 Build 10.0.21327 Changelog:

Build 21327 was the 32nd Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on March 03, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• Improvements to News and Interests feed UI in Taskbar
• This build includes a new font Segoe Fluent Icons
• On ARM64 devices, the default architecture for PowerShell is now x64 rather than x86
• Bug fixes and general improvements

Windows 10 Build 10.0.21332 Changelog:

Build 21332 was the 33rd Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on March 10, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• Theme-aware splash screens have been re-enabled for everyone
• 3D Viewer and Paint 3D apps will no longer be preinstalled on clean installs
• Due to increasingly low usage, Math Input Panel is being removed. However, the input control and math recognition engine that powered the app is remaining as an optional feature titled “Math Recognizer” which can be installed via Settings -> Apps -> Apps & features and clicking “Optional features”.
• Bug fixes and general improvements

Windows 10 Build 10.0.21337 Changelog:

Build 21337 was the 34th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on March 17, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• You can now reorder and customize background for virtual desktops
• Auto HDR preview for PC gaming experience
• The default layout of File Explorer now adds additional padding between elements. For users who prefer a more information-dense layout, there is a setting in View Options called “Use compact mode” which will restore the classic layout of File Explorer.
• Updates to “Settings -> Ease of Access -> Hearing -> Captions” page
• Notepad is now updateable via the Microsoft Store outside major OS updates. It also has a new icon and has been promoted out of the Windows Accessories folder to its own place in the Start menu.
• Windows Terminal is now an inbox app. Windows Terminal is a modern, fast, efficient, powerful, and productive terminal application for users of command line tools and shells like Command Prompt, PowerShell, and Windows Subsystem for Linux (WSL). Its main features include multiple tabs, panes, Unicode and UTF-8 character support, a GPU accelerated text rendering engine, and custom themes, styles, and configurations. Updates for Windows Terminal will continue to come through the Microsoft Store.
• Power Automate Desktop is now an inbox app. Power Automate Desktop allows you to automate web and desktop applications on your Windows desktop by mimicking the user interface actions like clicks, and keyboard input. You can also combine these actions with predefined support for applications like Excel to help automate repetitive tasks. You can find Power Automate within the Windows Accessories folder from the Start menu.
• Bug fixes and general improvements

Windows 10 Build 10.0.21343 Changelog:

Build 21343 was the 35th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on March 24, 2021. This new build arrived via “RS_PRERELEASE” development branch.

• New icons in File Explorer
• Improvements to Windows Sandbox and Microsoft Defender Application Guard (MDAG)
• Changed the name of the Windows Administrative Tools folder in Start to Windows Tools
• Updated File Explorer when renaming files to now support using CTRL + Left / Right arrow to move your cursor between words in the file name, as well as CTRL + Delete and CTRL + Backspace to delete words at a time, like other places in Windows.
• Device Manager now has the ability to view drivers alongside of devices. The new driver focused “Devices by drivers”, “Drivers by type”, and “Drivers by devices” views enable users to view, install, and remove drivers, while the new “Add drivers” action enables users to add and install new drivers across all applicable devices.
• Bug fixes and general improvements

Windows 10 Build 10.0.21354 Changelog:

Build 21354 was the 36th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on April 07, 2021. This new build arrived via “CO_RELEASE” development branch.

• New personalization options for news and interests on the taskbar
• Improvements to Display Settings
• New Camera Settings page
• MSPaint is now updateable via the Microsoft Store outside major OS updates. It also has a new icon and has been promoted out of the Windows Accessories folder to its own place in the Start menu.
• Snipping Tool is now updateable via the Microsoft Store outside major OS updates. It has been packaged together with Snip & Sketch so updates can be delivered for both at the same time. It has also been promoted out of the Windows Accessories folder to its own place in the Start menu.
• Bug fixes and general improvements

Windows 10 Build 10.0.21359 Changelog:

Build 21359 was the 37th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on April 14, 2021. This new build arrived via “CO_RELEASE” development branch.

• Added an option under the Power menu on the Start menu to restart apps after signing in when you reboot your device. When this setting is checked, it toggles the option under Settings > Accounts > Sign-in options > Restart apps.
• If you have your activity history synced across your devices through your Microsoft account (MSA), you will no longer have the option to upload new activity in Timeline. AAD-connected accounts won’t be impacted. To view web history, Edge and other browsers have the option to look back at recent web activities. You can also view recently used files using OneDrive and Office. Note: Timeline and all your local activity history still remain on Windows 10.
• The Ease of Access category in Settings renamed to Accessibility.
• The Ebrima font now supports characters from Bamum (Unicode block U+A6A0 to U+A6FF).
• The Nirmala UI font family updated to improve how the Chakma characters are displayed when combined.
• The new version of Korean IME reverted to the version included in previous releases.
• Bug fixes and general improvements

Windows 10 Build 10.0.21364 Changelog:

Build 21364 was the 38th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on April 21, 2021. This new build arrived via “CO_RELEASE” development branch.

• You can now turn off Aero Shake via Settings -> System -> Multitasking and choosing the “off” toggle under “Title bar window shake”. This setting is now off by default so for those who want it back will need to turn this setting on.
• Now you can run Linux GUI applications directly on Windows using the first preview of GUI app support on the Windows Subsystem for Linux (WSL)
• Task Manager supports Microsoft Edge process classification
• New Eco mode in Task Manager
• Japanese 50-on touch keyboard
• Theme-aware splash screens are now visible again in this build.
• 3D Viewer and Print 3D app shortcuts have been moved back into Start.
• Bug fixes and general improvements

Windows 10 Build 10.0.21370 Changelog:

Build 21370 was the 39th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on April 29, 2021. This new build arrived via “CO_RELEASE” development branch.

• Improvements to Bluetooth audio experience
• Some small adjustments to the icons in File Explorer’s address bar
• Improved the touch keyboard launch animation to make it smoother in cases where UWP apps reflow when it appears
• If you set focus to the Run dialog, the touch keyboard will now show a backslash (\) key.
• Bug fixes and general improvements

Windows 10 Build 10.0.21376 Changelog:

Build 21376 was the 40th Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on May 06, 2021. This new build arrived via “CO_RELEASE” development branch.

• New Segoe UI Variable font
• New icon for Connect app
• Bug fixes and general improvements

Windows 10 Build 10.0.21382 Changelog:

Build 21382 was the 41st Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on May 14, 2021. This new build arrived via “CO_RELEASE” development branch.

• HDR support to color managed apps: Some apps that use International Color Consortium (ICC) display color profiles, such as Adobe Photoshop, Adobe Lightroom Classic, and CorelDraw (amongst others) were limited to targeting the sRGB color gamut. Microsoft has added a new feature that lets these apps get accurate color and access the full gamut of your HDR display. To turn this feature on, close your application, right-click the app’s icon and click in Properties -> Compatibility tab and then under Settings select “Use legacy display ICC color management”. This flag only has an effect in HDR mode.
• The Start menu will launch to help people get to the apps they want quickly after a clean install or upgrade is finished.
• Updated the new generic folder icon in File Explorer so it will now show an indication when the folder has contents.
• Bug fixes and general improvements

Windows 10 Build 10.0.21387 Changelog:

Build 21387 was the 42nd Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on May 21, 2021. This new build arrived via “CO_RELEASE” development branch.

• Internet Explorer 11 desktop application disabled (More Info)
• Eco mode disabled in Task Manager
• Bug fixes and general improvements

Windows 10 Build 10.0.21390 Changelog:

Build 21390 was the 43rd Insider Preview build of Windows 10 released to new reorganized “Dev Channel/Fast Ring”. It was released on May 26, 2021. This new build arrived via “CO_RELEASE” development branch.

• Task Manager and MSI installers now have new Fluent icons
• You can now set Windows Terminal Preview as your default terminal emulator on Windows
• Bug fixes and general improvements

We tried to cover all major changes and new features present in various Windows 10 testing builds released to new “Dev Channel” or “Fast Ring” branch. If you know about any other important feature or change which is not present in this article, feel free to share it in your comment and we’ll add it to the list.

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Windows 10 21H2 Feature Update Changelog

Windows 11 Insider Preview Builds Changelog