List of features removed in Windows 11
Windows 11 is a major release of the Windows NT operating system and the successor of Windows 10. Several features that originated in earlier versions of Windows and included up to Windows 10 are no longer present on Windows 11. Following is a list of these.

Bundled apps 
The following apps are no longer bundled with Windows 11:

 3D Viewer
 Internet Explorer (still launchable if ieframe.dll is replaced from build 21382 or earlier)
 OneNote for Windows 10
 Paint 3D
 Skype
 Wallet

Windows shell 
The following parts of the Windows shell have been removed:
 Quick Status
 Tablet mode
 The Timeline feature in Task View
 The Save Search option in File Explorer
In addition:
 The touch keyboard no longer docks in screens larger than 18 inches.
 Windows no longer synchronizes desktop wallpapers across devices with a Microsoft account.
 Folder previews for images or videos contained in that folder in thumbnail view/large/extra large icon views are removed. The generic folder icon is now shown for any folder containing images or videos.

Start menu 
Some functionality from the Start menu was removed and replaced with other features.

 Folders and groups
 Live tiles (the Widgets app provides portions of what the live tiles of Windows 10's bundled apps once provided).
 Recent and pinned files on apps

Taskbar 
The following taskbar features have been removed:
 Support for bringing an app into focus by dragging a file to its button
 Support for moving the taskbar to the top, left, or right of the screen
 Support for changing the size of the taskbar or its icons.
 Windows are always combined into groups with labels hidden.
 The option to hide or customize individual system tray icons (Only third-party icons can be hidden or shown)
 All settings and shortcuts in the taskbar's context menu have been removed and replaced by a shortcut to the Taskbar settings area of Settings app.
Many of the options were not moved to the Taskbar settings
Task Manager can still be launched using: Ctrl+Alt+Del, Start > Run > Taskmgr.exe, or Ctrl + Shift + Esc
 The network and audio flyouts have been consolidated into a new settings flyout.
 "Some icons in the System Tray", although Microsoft doesn't specify which
 Support for third-party taskbar components (deskbands)
 The upward swipe gesture for jumplists
 The People button has been succeeded by the "Chat" button powered by Microsoft Teams.
 News and Interests has been succeeded by the "Widgets" panel.
 Action Center has been removed and replaced with two separate flyouts "Notification Center" and "Quick Settings"
 Ability to move system tray from the primary monitor 
 Hovering over the Show Desktop button to peek at the desktop.

Architecture 
Windows 11 only runs on the x64 or ARM64 CPU architectures, e.g. no longer runs on 32-bit PCs, such as IA32 CPUs.

NTVDM, a system component exclusive to 32-bit versions of the Windows NT family and never available on 64-bit versions of Windows, is no longer shipped with Windows 11.

See also

References

Windows 11
Software features
Microsoft lists
Computing-related lists