Windows 10 21354 (Co_Release) as ISO and more is available for the Insider to download

A new insider preview can be tested now. Microsoft has made Windows 10 21354.1, more precisely 10.0.21354.1 available for download. As a language package, we already have the 22353 for the new substructure of Windows 10 22H1, but that is a different story.

In January 2021 (Windows 10 21286) Microsoft made the last ISO available. Now finally a current one follows. Once the Windows 10 Client Insider Preview - Build 21354, also as ARM64 version as VHDX. The Windows 10 Enterprise VL Insider Preview - Build 21354, as well as the Windows Language Pack Insider Preview - 21354. The downloads are a little further down.

Let's get to the changes in this version.

The main changes:

  • [Messages and Interests] As already mentioned, we have activated the option in the “Messages and Interests” taskbar to deselect the “Open on hover” option. This is based on your feedback.
  • The default path for accessing Linux files from Windows using the Windows Subsystem for Linux has been changed from wsl to wsl.localhost to improve performance and reliability. Linux files can still be accessed via `\\ wsl $ \\`.
  • Under Settings> Update & Security> Change active hours you will find the switch for "Automatically adjust active hours for this device based on activity" if you have never set this function. We're starting by rolling out a change to Insiders that will enable this setting by default. When this setting is enabled, Windows Update is able to more accurately schedule automatic restarts when you are not normally using your device.
  • Starting with the latest versions of Microsoft Edge, all pinned websites (regardless of which version you were using when you pinned them) should now use the taskbar behavior described here without having to unpin and re-pin the website first.
  • On ARM64 devices, you can now toggle the compatibility settings for x64 applications.
  • Under Settings> Personalization> Device usage, you can select all ways of using your device for customized suggestions for tips, tools and services.

Known issues in Windows 10 21354

  • We are investigating reports that the update process hangs for an extended period of time when trying to install a new build.
  • [News and Interests] If you press the ESC key to close an open context menu in the flyout, the entire flyout will be closed instead.
  • [Messages and Interests] Sometimes you cannot use the stylus to exit the Messages and Interests flyout.
  • [ARM64] Insiders who have installed the preview version of the Qualcomm Adreno graphics driver on the Surface Pro X may experience a reduced display brightness. This problem is resolved with an updated version of the preview graphics driver at If you encounter this problem, please refer to the feedback collection for more information.
  • We're investigating an issue where search items (including the search box in File Explorer) no longer display correctly in the dark theme.
  • We are working on a fix for an issue affecting WSUS users where the “Check for updates online from Microsoft Update” option is grayed out. If this affects you, you can run the following command from an advanced command prompt to set the registry key so that the scan checks the Microsoft servers:
  • reg add "HKLM \ Software \ Microsoft \ WindowsUpdate \ UX \ Settings" / f / v ScanMicrosoftOnly / t REG_DWORD / d 0x01 Then
  • click in the Windows update settings on the regular button "Check for updates". Please note that if the scan needs to be performed repeatedly, the registry key will need to be added each time as the scan reads and deletes the key.
  • Due to a problem migrating the shortcuts to the new Windows Tools location, this PC is displayed with a display name of “Computer”. We have already launched a fix for this issue.
  • Some non-administrative apps, such as B. 3D Viewer and Print 3D, which were previously in the Windows Accessories folder, are now in Windows Tools. These app shortcuts will be moved back to Start with an upcoming fix. In the meantime, they can still be found and accessed using Windows tools.
  • The Windows camera app currently does not respect the default brightness setting that was set via the new Camera Settings page.
  • Some cameras currently do not support adjustment in the camera settings app if the camera is also used by another app.
  • Access to the virtual GPU is incorrect for Windows and Linux guests. Adding a vGPU to a VM has no effect and the VM continues to run with software rendering.

Fixed issues in Windows 10 21354

  • [Games] We fixed an issue where certain games could crash, save data not syncing when playing a game on another device, or not saving when installing a new game.
  • [File Explorer] We fixed an issue where all folders pinned to Quick Access would disappear in File Explorer after installing build 21343. Please note that this fix will prevent the problem from occurring in the future, it will not bring back the folders that were not pinned if you previously installed the affected build.
  • [File Explorer] We fixed an issue causing some Insiders to have the entire Quick Access folder section missing after installing the previous flight.
  • We fixed an issue that was affecting the reliability of the search in the previous flight.
  • [Messages and Interests] We fixed an issue where Messages and Interests could obscure other content on the taskbar, especially on smaller screens.
  • We fixed an issue where the tooltip text for items in the start menu of the power button was not displaying correctly.
  • We fixed an issue that resulted in a crash when entering WinPE and trying to activate Narrator with WIN + CTRL + Enter.
  • We fixed an issue that resulted in some Insiders having an error check with a SYSTEM_THREAD_EXCEPTION_NOT_HANDLED error when restarting or shutting down in the previous flight.
  • We have fixed a problem that could lead to a bug check when starting the WSL.
  • Fixed an issue that could result in the Windows Update Settings page showing progress points but not loading.
  • We fixed an issue where navigating to Power and Hibernation in Settings was causing the Settings to crash.
  • Fixed an issue where a random switch would appear under Settings> Personalization> Lock Screen that did nothing.
  • We fixed a bug that caused some Insiders to see an error recently when trying to add a password to a local account that was created without a password.
  • We fixed an issue where when opening the Pinyin IME Settings from Search, the Settings page was unexpectedly blank.
  • We fixed an issue where the desktop background could go black after dragging an app to the edge of the screen.
  • We fixed an issue where some of the text in the Snipping Tool was not displaying correctly.
  • Fixed an issue that resulted in the handwriting input field not working when inputting pen on ARM64 PCs.
  • Fixed an issue that was affecting the reliability of the clipboard history.
  • We fixed an issue that resulted in characters being duplicated in certain applications when typing with the Korean IME.
  • Fixed an issue that resulted in Composition Strings not being able to be pasted when typing with an IME after copying and pasting a text box in PowerPoint.
  • Fixed an issue where key events would be lost when renaming files in File Explorer while typing with an IME.
  • We fixed an issue where when typing with the Japanese or Chinese IMEs in certain apps that have their own user interface for IME candidates, the IME candidates would not appear in the app's user interface.
  • The fix we mentioned in Build 21327 to address an issue where a toggled key on the touch keyboard had the wrong background color is now being rolled out to all Insiders in the Dev Channel.
  • We fixed an issue resulting in an increase in login time on the previous flight.
  • We fixed an issue that resulted in some Insiders causing the boot time to be longer in the previous flight.
  • We fixed an issue where the network button was not working on the login screen and possibly crashing.
  • We fixed an issue that resulted in some logins getting stuck on a black screen. If you continue to see a similar problem, please submit new feedback in the Feedback Hub.
  • We fixed an issue that could result in freezing when viewing videos in Chromium-based browsers in recent builds of the dev channel.

Download the Windows 10 21354 ISO and more

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