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'{{Confuse|text = [[Windows 10 build 21370]], which does not include the new [[Windows 11]] user experience}} {{Infobox Windows build |build of = [[Windows 11 (original release)|Windows 11]] |buildtag = 10.0.21370.1003.fs_dev6_flt.210430-1730 |family = 11 |version = 10.0 |build = 21370 |lab = fs_dev6_flt |revision = 1003 |compiled = 2021-04-30 |timebomb = 2021-10-31 |image = Win11-10.0.21370-Desktop.png |winver = Win11-10.0.21370-Winver.png |arch = AMD64 |sku = Home (N, Single Language)<br>Cloud (N)<br>Pro (N, Single Language, China)<br>Pro Education (N)<br>Pro for Workstations (N)<br>Education (N)<br>Enterprise (N, Multi-session)<br/>IoT Enterprise }} '''Windows 11 build 21370''' is the earliest available build of [[Windows 11 (original release)|Windows 11]], which was found by BetaWorld members on 8 June 2023, along with [[Windows 11 build 21376|three]] [[Windows 11 build 21380|other]] [[Windows 11 build 21385 (fs dev6 flt)|builds]] sourced from the same branch.<ref>https://betaworld.cn/Windows_11:10.0.21370.1003.fs_dev6_flt.210430-1730</ref> It was later shared on 21 October 2024.<ref> [https://blog.betaworld.cn/archives/430/ <nowiki>[资源发布] Windows 11 Build 21370.1003 (fs_dev6_flt)</nowiki>], ''BetaWorld Blog''. 21 October 2024.</ref> This build is one out of many known builds to be compiled from a branch with the <code>fs</code> prefix. The prefix stands for ''Firesteel'', the codename for an internal Microsoft self-hosting effort related to Windows 11 development.<ref>[https://twitter.com/zacbowden/status/1402607518501769224 Zac Bowden on Twitter: "Fire Steel > Cherry Hill > Sun Valley; Internal Tool > Experience Packages > New UX"]. 9 June 2021.</ref> A leak source detection implementation is present in the build, and can be controlled through the use of a [[Feature lockout in Windows#Windows 10 and later|Velocity staging key]]. Various user interface and experience elements have been updated to resemble what can be seen in the final release, such as sporting a new user experience with the [[start menu]] and [[taskbar]]. Others have been unchanged from [[Windows 10]], such as the [[watermark]], <code>[[winver]]</code> and wallpapers. Additionally, the Get Started app's Welcome page includes an internal UX design concept which features an earlier version of the [[winwallpaper:Bloom|Bloom]] wallpaper. Due to it being very early in development, many areas still say [[Windows 10]]. Unlike newer builds of Windows 11 from [[Windows 11 build 21996|build 21996 onwards]], it does not enforce the TPM 2.0 or UEFI requirements. ==New features and changes == ===OOBE=== This build introduces a new oobe, sporting a similar design to what is seen in [[Windows 10X]], albeit with some changes: *Finalized icons in some sections *Improved title wording *Reproportioning of various User Interface elements The first logon animation also had its text updated to bear a friendlier appeal towards consumers. ===User interface=== ====Windows Aero==== Window frames have been updated to use rounded corners. Unlike [[Windows 11 build 21996|build 21996]], this build forces on rounded corners by default even when [[Desktop Window Manager]] is running under software rendering mode or when dedicated GPU drivers are not present in the operating system. ====Shell==== =====Start menu and Taskbar===== A new taskbar, similar to the one featured in build 21380, has been introduced. The Start button and app buttons are centered by default, rather than aligned to the left, although the old behavior can be re-enabled in [[Settings]]. The new taskbar also removes support for custom toolbars such as the Quick Launch panel. The ability to open the jump list for applications on the taskbar by dragging up on the icon is no longer present. Compared to previous builds like [[Windows 11 build 21343|21343]], this build retires the usage of the theme-aware grayscale start button and replaces it with a blue gradient. Hovering over icons located in the taskbar also animate themselves. The options to change the location of the taskbar and show window/applications names in the taskbar have been removed. The setting to show the taskbar on all displays was also removed, although it can be toggled directly using a registry value: <syntaxhighlight lang="registry"> [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced] "MMTaskbarEnabled"=dword:00000001 </syntaxhighlight> Similarly, the option to use smaller icons in the taskbar has been removed from Settings, although a new registry setting was introduced that also adds a new, larger than default mode for the taskbar: <syntaxhighlight lang="registry"> [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced] ; Small taskbar "TaskbarSi"=dword:00000000 ; Medium taskbar (default) "TaskbarSi"=dword:00000001 ; Large taskbar "TaskbarSi"=dword:00000002 </syntaxhighlight> As this is early in development, the <code>TaskbarSi</code> registry setting only affects the DPI instead of exclusively the taskbar as seen in later builds like 21380. The [[News and interests]] functionality has also been removed from the new taskbar in favor of the newer [[Widgets]] feature (referred to as the ''Windows Dashboard'' in this build), a panel available from the taskbar that slides from the left and contains weather information and news provided by MSN. Support for third-party widgets would not be implemented until [[Copper]] [[Windows 11 build 25217|build 25217]]. Together with the new taskbar, the Start menu has been greatly revamped. Live tiles have been completely removed, with the intended replacement also being the new Widgets panel. The main page shows icons of pinned applications in the top half, with the full list of apps being available by clicking the "All Apps" button in the top right corner. The lower half shows recommended apps and files, which can also be expanded by clicking the "More" button on the right side. The bottom panel contains the power button on the right and the user name and picture on the left, which when clicked reveals links to user account settings, logoff and lock features. Similarly to the multi-monitor taskbar, the new Start menu can also be disabled using a registry value, reverting to the Windows 10 design:<ref>[https://web.archive.org/web/20210615214534/https://twitter.com/WithinRafael/status/1404909886446600196 Rafael Rivera on Twitter: "Windows 11 tip: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Start_ShowClassicMode DWORD=0x1 to enable classic Start"]. 15 June 2021. Archived from the [https://twitter.com/WithinRafael/status/1404909886446600196 original] on 15 June 2021.</ref> <syntaxhighlight lang="registry"> [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced] "Start_ShowClassicMode"=dword:00000001 </syntaxhighlight> =====Windows 10 shell===== The new Windows 11 user interface can be disabled by merging the below registry entries and restarting the Explorer shell: <syntaxhighlight lang="registry"> [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell\Update\Packages] "UndockingDisabled"=dword:00000001 </syntaxhighlight>The Quick Link menu ({{key press|⊞ Win|X}} shortcut) functionality doesn't work when this is enabled. =====Snap layouts===== Hovering over the Maximize/Restore button in the window caption by default shows a new menu that reveals a series of snap layouts, as well as being able to choose snap the current window's position to predefined coordinates. Furthermore, when multiple windows are snapped next to each other, the taskbar also shows a common window preview for all windows in the layout when hovering over the respective application icons. <gallery> 21996 snap layouts.png|Snap layout menu </gallery> =====Themes===== The dark theme, which was introduced in the [[Windows 10 May 2019 Update]], now utilizes a work-in-progress version of the [[winwallpaper:Hero|older Hero wallpaper]] from the [[Windows 10 (original release)|original Windows 10 release]] as its associated wallpaper. This version has varying noticeable differences, such as the set used to construct the actual image being visible in its entirety and a different lighting setup, reminiscent of natural sunlight. This wallpaper variant originally first appeared in retail demo content for the initial Windows 10 release as part of an attract loop. =====Touch===== The build also introduces various changes to the way touch devices work, the largest of which being the complete removal of the legacy Tablet Mode [[start menu]]. The advanced multi-touch gestures (initially supported for touchpads only) can now also be used with a touch screen as well. Smaller improvements to simplify the Windows desktop experience for tablet users such as a larger window resize hitbox have also been implemented to make windows far easier to manage, with further emphasis on feedback by encasing windows into an acrylic border. =====Miscellaneous===== *A new startup sound has been introduced, replacing the sound first introduced in [[Windows Vista]] but disabled by default in Windows 8, [[Windows 8.1|8.1]], and 10. However, unlike later builds, it can be reverted to the old one by using <code>UndockingDisabled</code> registry setting. *The new Fluent UI icon set has been implemented into the [[Settings]] application. *The ''Segoe UI Variable'' font has been introduced. At this point, the font looks similar to its Display Light variation seen in later builds. ==Bugs and quirks== A majority of the issues presented in this build are the direct consequence of constant forward/reverse integration and merging from various [[Build lab|branches]], including changes sourced from shell branches belonging to the ''Windows Devices and eXperiences'' team (WDX). In addition, the original installation media was produced with bad metadata as the primary installation image was captured while undergoing a servicing operation that regenerates the <code>WNF_SHEL_INTERNAL_EXPERIMENT</code> seed, resulting in invalid access control lists and bad reparsing data persisting across thousands of files within the image and causing built-in applications (and by extension part of the Windows shell) to misbehave. ===General === *When using dark mode, apps have a white outline. *[[Task Manager]] does not work when the <code>UndockingDisabled</code> registry setting is not present. ===State Repository Service=== Several built-in applications such as Photos, [[Microsoft Store]], [[Windows Defender]] and [[Windows Terminal]] may fail to install and launch properly, in turn causing the State Repository Service to experience a constant [[w:memory leak|memory leak]], leading to potential performance issues and resource exhaustion. ===Desktop Window Manager=== The taskbar may become fully transparent when installing graphics drivers under some configurations. ===Shell=== * Graphical artifacts may appear within various components in <code>explorer.exe</code> after modifying settings, such as the taskbar icon position. *The set wallpaper may randomly reposition itself when interacting with other user interface elements. *Right-clicking on the taskbar will open [[Microsoft Edge]]. *The Windows 11 taskbar might get disabled at random. *A scrollbar might appear for a split second on the taskbar when opening an app. *When the Windows 11 shell is disabled, right clicking on a virtual desktop in Task View crashes <code>explorer.exe</code>. ===Setup=== *The animation played when the out-of-box experience starts is truncated. *Certain setups will prevent certain sections of the out-of-box experience to work. *The first logon animation lacks the animated background present in later builds. == Gallery== <!-- TODO: Retake some screenshots to use 1920x1080 @ 125 DPI --> ===[[Out-of-box experience]]=== <gallery> Win11-10.0.21370-OOBERegions.png|Regional settings File:21370-OOBE-KBD LAYOUT.png|Keyboard Settings File:21370-OOBE ConnectNetwork.png|Connect to a network File:21370-OOBE-LocalAccount.png|Local Account File:21370-OOBE-PrivacySettings.png|Privacy Settings File:21370-OOBE-PastOOBE.png|First logon animation </gallery> ===Interface=== <gallery> Win8boot.png|[[Boot screen]] Win11-10.0.21370-LockScreen.png|Lock screen Win11-10.0.21370-StartMenu.png|Start menu 21370 OldShellEnabled.png|Desktop with Windows 11 shell packages disabled, resulting in the traditional [[Windows 10]] shell being used. Win11-10.0.21370-Dashboard.png|[[Widgets|Windows Dashboard (Widgets)]] Win11-10.0.21370-GetStarted.png|Get Started </gallery> ===Themes=== <gallery> Win11-10.0.21370-LightDemo.png|Windows (light) Win11-10.0.21370-DarkDemo.png|Windows (dark) </gallery> ===Screenshots uploaded prior to publication=== <gallery> Windows 11-10.0.21370.1003-OOBE-Country.png|OOBE regional settings page Windows 11-10.0.21370.1003-Start Menu.png|Start menu Windows 11-10.0.21370.1003-Settings.png|Settings Windows 11-10.0.21370.1003-Notifications.png|Action Center Windows 11-10.0.21370.1003-Search.png|Search Windows 11-10.0.21370.1003-Get Started.png|Get Started Windows 11-10.0.21370.1003-Windows Light.png|''Windows (light)'' theme Windows 11-10.0.21370.1003-Windows Dark.png|''Windows (dark)'' theme </gallery> ==References== {{reflist}} [[Category:Windows 11 builds]]'