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Microsoft releases Windows 10 Build 21296

Microsoft today released Windows 10 Build 21296 to Insiders in the Dev channel. It comes from the RS_PRERELEASE branch. It doesn't include any new feature, but includes a ton of fixes and general improvements.

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Also, the company has mentioned that Windows Insider Preview build 20262 or earlier will be expiring on January 31, 2021. It is recommended to get the most recent preview build available.
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What's new in Windows 10 Build 21296

Changes and Improvements

Microsoft has noted the following two changes made to the user interface and Storage Spaces.

  • A new clipboard history design is rolling out to Insiders. The updated flyout, which made its first appearance in build 20206, allows printing, unpinning, deleting, and syncing individual entries.
  • The new Storage Spaces UI in Settings is now available to all Insiders in the Dev Channel.

Besides the above, there is a huge list of fixes.

Fixes in this release

  • The issue that could prevent Call of Duty: Modern Warfare and Call of Duty: Black Ops Cold War from launching has been fixed and is in the process of rolling out. Please update your game(s) to apply the fix.
  • We fixed an issue from the previous flight where Xbox Game Bar was launching on its own for certain games, without pressing WIN + G.
  • We fixed an issue where when the Xbox Game Bar was launched (like when pressing WIN + G), the PC might appear unresponsive.
  • We fixed an issue resulting in the Program Compatibility Assistant sometimes unexpectedly taking up a large amount of CPU resources in the last few flights.
  • We fixed an issue that could result in explorer.exe hanging when mounting ISOs.
  • We fixed an issue where the Windows Security app might show both a check for updates button and link at the same time.
  • We fixed and issue causing some Insiders to experience rendering / graphic issues after resizing certain app windows.
  • Installing this build will restore x64 emulation on ARM64 if it had previously broken after installing Build 21292.1010.
  • For Insiders using x64 apps on ARM64, there is an updated preview of the ARM64 C++ redistributable (version 14.28.29812) now available to install from https://aka.ms/arm64previewredist. This updated redist adds vcruntime140_1.dll and fixes crashes occurring in a number of CAD applications.

Traditionally for pre-release builds, there are known issues.

Known issues

  • We’re working on a fix for an issue Insiders have reported where certain games like State of Decay 2, or titles from the Assassin’s Creed franchise, may hang or crash when launching.
  • We’re investigating an issue where some 32-bit systems may lose network connection after taking this build. If you are running a 32-bit version of Windows, you may wish to pause updates until the issue is resolved.
  • Miracast users may experience very low frame rates in this build.
  • We’re looking into reports of the update process hanging for extended periods of time when attempting to install a new build.
  • We’re investigating an issue impacting the reliability of Start and other modern apps, which started in the previous flight. If you are impacted, you may experience the Start menu layout resetting.
  • Aero Shake is disabled in this build. To enable it, you will need to go here in Registry Editor and create a new DWORD entry named DisallowShaking with a value of 0: HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced.
  • Live previews for pinned sites aren’t enabled for all Insiders yet, so you may see a grey window when hovering over the thumbnail in the taskbar. We’re continuing to work on polishing this experience.
  • We’re working on enabling the new taskbar experience for existing pinned sites. In the meantime, you can unpin the site from the taskbar, remove it from the edge://apps page, and then re-pin the site.
  • [News and interests] Upgrading to this build will cause your news and interests taskbar setting to be reset to “Show icon and text”. This is fixed going forward.
  • [News and interests] Sometimes the news and interests flyout cannot be dismissed with pen.
  • [News and interests] News and interests uses more taskbar space on the left than expected.
  • [News and interests] The taskbar button can show stale information each time the user signs into their Windows session.
  • [News and interests] The news and interests flyout shows content in a single column before quickly switching to double column.
  • [News and interests] Text in taskbar button can look pixelated in high resolution screens.
  • [News and interests] The taskbar context menu and news and interests overlap.
  • [News and interests] In certain circumstances, news and interests uses 100% of CPU when first launched.
  • [News and interests] Attempting to share content dismisses the flyout.
  • [ARM64] Insiders who installed the preview version of the Qualcomm Adreno graphics driver on the Surface Pro X may experience reduced brightness of the display. This will be addressed in a future update.

That's all about this release. The official announcement is here.

If you have configured your device to receive updates from the Dev Channel/Fast Ring ring, open Settings - > Update & recovery and click on the Check for Updates button on the right. This will install the latest available Insider Preview of Windows 10.

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Author: Sergey Tkachenko

Sergey Tkachenko is a software developer who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Telegram, Twitter, and YouTube.

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