Windows 10 build 21292.1000

Build of Cobalt
OS family
Architecturex86, x64, ARM64
Timebomb2021-10-31 (+296 days)
Works in
21292 winver.png
Home (N, Single Language, China)
SE (N)
Pro (N, Single Language, China)
Pro Education (N)
Pro for Workstations (N)
Education (N)
Enterprise (Evaluation, G, GN, N, N Evaluation)
IoT Enterprise
Use a Windows 10 Retail serial
TCB.png TCBGallery.png

Windows 10 build 21292.1000 is the third Insider Preview build of Cobalt, the 21H2 development semester of Windows as a service. This build was released on 13 January 2021 to all Windows Insiders on the Dev Channel.

Changes[edit | edit source]

  • Multiple fixes and reliability improvements to the News and interests flyout.
  • Settings > System > Sounds now displays a message when microphone permissions have been turned off for the whole system or for all apps with a link to the Microphone Privacy page.

Bugs[edit | edit source]

News and interests[edit | edit source]

  • The taskbar button's layout is reset to "Show icon and text" after upgrading to this build.
  • Sometimes the flyout cannot be dismissed with pen.
  • The taskbar button can show stale information each time users log into their account.
  • The flyout shows content in a single column before quickly switching to double column.
  • The taskbar button's text can look pixelated in high resolution screens.
  • The taskbar context menu and the flyout overlap.
  • In certain circumstances, the flyout uses 100% of CPU when first launched.
  • Attempting to share content dismisses the flyout.

General[edit | edit source]

  • The update process to this build has a chance of hanging for extended periods of time.
  • Games such as State of Decay 2 or Assassin’s Creed may hang or crash when launching.
  • Call of Duty: Modern Warfare and Black Ops Cold War may not launch starting with this build.
  • Some rendering / graphic issues may be experienced after resizing certain app windows. This should be resolved after minimizing and restoring all windows by using the ⊞ Win+D hotkey twice.
  • Some 32-bit systems may lose network connection after upgrading to this build.
  • The reliability of the Start menu and other modern apps may be affected in this build.
  • When Xbox Game Bar is launched from the Start menu or via the ⊞ Win+G hotkey while using a text editor, the computer may appear unresponsive. If you encounter this, dismiss the bar with the same hotkey and end the GameBar.exe process from Task Manager.
  • Xbox Game Bar might launch on some PCs randomly without pressing the ⊞ Win+G hotkey.
  • Miracast users may experience very low frame rates in this build.
  • Live preview doesn't work for pinned site tabs on some machines, a gray window is seen instead of the intended content.
  • Aero Shake is disabled in this build. To enable it again, merge the following to the registry and restart explorer.exe:
Windows Registry Editor Version 5.00

Gallery[edit | edit source]

External links[edit | edit source]