Windows 11 build 21996

Build of Windows 11
OS familyWindows 11 (NT 10.0)
Version number10.0
Build number21996
Build revision1
Build labco_release
Compiled on2021-05-29
Home (N, Single Language)
Pro (N, Single Language)
Pro Education (N)
Pro for Workstations (N)
SE (N)
Education (N)
Enterprise (N, Multi-session)
IoT Enterprise
Product key
Use a Windows 10 Retail serial
About dialog
21996 Winver.png
TCB.png TCBGallery.png

Windows 11 build 21996 is a build of Windows 11, which was leaked online on 15 June 2021. Prior to its upload, it was referenced in a GitHub issue posted by a Microsoft employee on 1 June 2021.[1]

System requirements[edit | edit source]

This build raises the system requirements to 4 GB of memory and a dual-core processor or better. The setup also checks for Secure Boot and Trusted Platform Module support on UEFI systems in accordance with the announced Windows 11 system requirements, although the build doesn't actually require either to work. The requirements can be bypassed by using dism.exe to directly apply the install image, or by disabling the checks altogether in the registry before running the setup:


Alternatively, this build's install.wim can be used with an installer from a Windows 10 build, however, it may remove the ability to upgrade if an older build is used. Replacing the libraries responsible for the requirement checks, appraiserres.dll and appraiser.dll with a version from Windows 10 on the install media has also been found to work.

Changes[edit | edit source]

Windows Setup[edit | edit source]

The Windows 11 branding is now utilized across certain portions of the Windows Setup process.

Out-of-box experience[edit | edit source]

A new first logon animation design has been implemented, now showing three blue lights moving around the screen in an infinite loop, and text has been updated to bear a friendlier appeal towards consumers. The typeface has also been changed to utilize Segoe UI Variable, a variant of the existing Segoe UI font face designed for high-DPI monitors.

Upgrades to a higher version of Windows are now automatically performed during the out-of-box experience if a newly-installed copy of Windows is connected to the Internet.

User interface[edit | edit source]

Wallpaper set[edit | edit source]

This is the earliest known build to replace the older Hero default wallpaper with Bloom, a computer-generated image depicting a piece of blue fabric on top of a blue background that largely resembles a rose flower. It is available in both light and dark variations.

Task Manager[edit | edit source]

The Task Manager icon has been updated to align with the Fluent design guidelines. The experimental "Eco mode" power saving feature introduced as part of Cobalt build 21364 was removed, although it would be later reimplemented in Nickel build 22557 as "Efficiency Mode".

Internet Explorer[edit | edit source]

Internet Explorer 11's functionality has been disabled and attempting to run its executable file (iexplore.exe) will open Edge instead. It is still possible to run Internet Explorer if ieframe.dll is replaced with a copy from an older build or if it is invoked through the Internet Options Control Panel applet. Subsequent builds of Windows 11 would ultimately remove the associated executable for Internet Explorer altogether.

File Explorer[edit | edit source]

The reworked folder icon in the File Explorer application has been slightly updated to indicate if any content is present in the directory. Visibility adjustments have been made to the Task View functionality, and the Meet Now taskbar flyout first introduced as part of Iron build 20221 has been removed.

Bugs and quirks[edit | edit source]

General[edit | edit source]

  • When updating folder options, the File Explorer window might flicker in the background.
  • The Widgets pane's contents may fail to render on certain devices, the user can still interact with them.
  • The Widgets pane may not load and instantly close upon trying to open it.
  • Sometimes the Search Box shows a black box instead of the search results.
  • Many areas still use the old Windows 10 branding, including the Setup and the boot menu.

Out-of-box experience (OOBE)[edit | edit source]

  • When installing N editions, the OOBE will fail to load due to the absence of Windows Media Player components.
  • The "Forgot your password?" link when setting up a Microsoft account or unchecking the option to receive promotional emails both lead to a blank screen.

Desktop Window Manager[edit | edit source]

  • The taskbar may become fully transparent on some configurations when installing graphics drivers.
  • Window frames appear squared with software rendering or during the close animation.
  • On some UWP applications like Settings, a small white corner may appear on the close button whilst pressing and holding on the Close button.
  • There are multiple glitches with application windows that use the DWM to expand the former glass frame into their client area, such as the Windows Mobility Center.
    • When not maximized, only a shadow or window frame is shown, although the taskbar thumbnails are rendered correctly.
    • When maximized, the window contents are shown correctly, however, the background may become fully transparent.
  • Dropdown menus may fall back to square corners in some applications after being shown once with rounded ones.
  • The animation that occurs when viewing two taskbar thumbnails next to each other does not render.

Gallery[edit | edit source]

Windows Setup[edit | edit source]

Out-of-box experience (OOBE)[edit | edit source]

Interface[edit | edit source]

References[edit | edit source]