Microsoft is pushing Windows 10 Insider Preview Build 19043.844 (21H1) to all Insiders in the Beta channel

by Surur
March 2, 2021
windows 10 21h1

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In February Microsoft released Windows 10 21H1 Build 19043.844 (KB4601382) to the Beta Channel. The release is part of the announcement of Windows 10 version 21H1 as the next feature update for Windows 10. 

Microsoft then released the build to the Beta Channel via their “seeker” experience in Windows Update. This meant Insiders in the Beta Channel needed to go to Settings > Update & Security > Windows Update and choose to download and install 21H1.

Today Microsoft announced that the update will now be offered as a recommended update to all Windows Insiders in the Beta Channel, meaning Insiders who previously didn’t choose to install 21H1 will now automatically receive 21H1 in the Beta Channel.

21H1 Build 19043.844 includes all the fixes noted here as well as the following new features:

  • Windows Hello multi-camera support to allow users to choose an external camera priority when using high end displays with integrated cameras.
  • Windows Defender Application Guard performance improvements including optimizing document opening scenario times.
    • Microsoft fixed an issue that causes a one minute or more delay when you open a Microsoft Defender Application Guard (WDAG) Office document. This occurs when you try to open a file using a Universal Naming Convention (UNC) path or Server Message Block (SMB) share link.
    • Microsoft improved Robocopy’s performance when copying files that total over 400 MB in size.
    • Microsoft fixed an issue that causes a WDAG container to use almost 1 GB of memory (working set) when the container is idle.
  • Windows Management Instrumentation (WMI) Group Policy Service (GPSVC) updating performance improvement to support remote work scenarios.
    • Microsoft fixed an issue that causes changes that the Active Directory (AD) administrator makes to user or computer group membership to propagate slowly. Although the access token eventually updates, these changes do not appear when the administrator uses gpresult /r or gpresult /h to create a report.

Once an Insider updates their PC to 21H1, they will continue to automatically receive new 21H1 updates through Windows Update using their servicing technology (like the monthly update process).

To check and see if you’re running 21H1, just type “winver” into the Windows search box on the taskbar. It should show as “version 21H1”.

To get this build, Insiders in the Beta Channel will need to go to Settings > Update & Security > Windows Update and choose to download and install 21H1.

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