HomeWinBuzzer NewsMicrosoft Rolls Out Windows 10 Cumulative Updates to the Insider Program

Microsoft Rolls Out Windows 10 Cumulative Updates to the Insider Program

Build 19042.782 is available for Windows 10 20H2 users on the inside, while build 21296 is for the Dev channel and Windows 10 21H1.


As is usually the case, did not roll out any through December. That means January's updates for are busier than normal. On the Insider Program, Microsoft is rolling out preview updates only available on the various testing branches:

Windows 10 Preview build 19042.782 for Windows 10 20H2

Windows 10 Preview build 21296 for Windows 10 21H1

Before getting into the details of those builds, it's worth noting Microsoft is also rolling out preview updates for Windows 10 1909 and 1809. However, these are stable build release that any body can get.

Yes, build 19042.782 is also for a stable build (Windows 10 20H2), but it is currently only available to Insiders. Starting with that preview release, it is available now on the Beta and Release Preview rings on the Inside. That means they should come to all Windows 10 users running version 20H2 in the coming weeks.

Build 19042.782 Changelog

  • We updated the default values for the following Internet Explorer registry keys:
    • svcKBFWLink = “ ” (empty string)
    • svcKBNumber = “ ” (empty string)
    • svcUpdateVersion = 11.0.1000.
  • In addition, these values will no longer be updated automatically.
  • We enabled administrators to disable standalone Internet Explorer using a Group Policy while continuing to use Microsoft Edge's IE Mode.
  • We enabled you to configure certain policies that support Microsoft Edge IE Mode using mobile device management (MDM).
  • We fixed an issue in the Universal C Run-time Library (UCRT) that causes printf() to incorrectly round floating point values.
  • We fixed an issue that displays a User Account Control (UAC) dialog box unexpectedly when you turn on speech recognition.
  • We fixed an issue that fails to notify the target application when you select the Copy link command on the Share menu.
  • We fixed an issue that causes the 64-bit fmod() and remainder() functions to damage the Floating Point Unit (FPU) stack.
  • We fixed an issue that causes a stop error or causes a device to stop responding when you play a game in full-screen or tablet mode.
  • We fixed an issue with using Ctrl+Caps Lock and Alt+Caps Lock to switch to Hiragana or Katakana mode respectively after upgrading to Windows 10, version 2004.
  • We fixed an issue that prevents you from opening a document that is on the Windows desktop and generates the error, “The directory name is invalid.” This issue occurs after changing the desktop location in the Location tab of the Desktop Properties dialog box (File Explorer -> This PC -> Desktop).
  • We fixed an issue that creates duplicate cloud provider folders in the File Explorer navigation pane.
  • We fixed an issue that occurs when the Mandatory Profile check box is selected when you copy a user profile.
  • We fixed an issue that might cause the Alt+Tab order to change unexpectedly and cause you to switch to the wrong window.
  • We fixed an issue that prevents ImmGetCompositionString() from returning the white space for furigana when using the Japanese Input Method Editor (IME).
  • We fixed an issue with some special key combinations used in DaYi, Yi, and Array IMEs that might cause an application to stop working.
  • We fixed an issue that displays a blank lock screen after a device wakes up from Hibernate.
  • We corrected historical daylight savings time (DST) information for the Palestinian Authority.
  • We added support for serial number control using the registry.
  • We fixed an issue that incorrectly deactivates some Windows 10 devices after upgrading to Windows 10, version 2004.
  • We fixed an issue that causes the upload of diagnostic logs to a management service, such as Microsoft Intune, to fail. The failure occurs because of a network time-out on a slow network.
  • We displayed a notification to a user when an administrator signs in to an MDM service, such as Microsoft Intune, to find the location of a managed device.
  • We fixed an issue that prevents users from using their smart card credentials when the user hint is the domain credential name (domain\username).
  • We fixed an issue in which using local Service for User (S4U) affects Data Protection API (DPAPI) credential keys and causes users to sign out unexpectedly.
  • We fixed an issue that causes the silent mode deployment of BitLocker to fail with the error 0x80310001. This issue occurs when deploying BitLocker encryption to Hybrid Azure Active Directory (Azure AD) joined devices.
  • We fixed an issue that might cause a black screen to appear or delay signing in to Hybrid Azure Active Directory joined machines. Additionally, there is no access to login.microsoftonline.com.
  • We fixed an issue that might cause systems that use BitLocker to stop working with the error 0x120 (BITLOCKER_FATAL_ERROR).
  • We fixed an issue that causes a device to stop working when deploying Microsoft Endpoint Configuration Manager if AppLocker is enabled on the device.
  • We fixed an issue that cause the LSASS.exe process to leak memory on a server that is under a heavy authentication load when Kerberos Armoring (Flexible Authentication Secure Tunneling (FAST)) is enabled.
  • We fixed an issue that causes LSASS.exe to stop working because of a race condition that results in a double free error in Schannel. The exception code is c0000374, and the Event Log displays Schannel event 36888, fatal error code 20, and error state 960. This issue occurs after installing Windows updates from September 2020 and later.
  • We fixed a memory leak issue that occurs when you authenticate a client certificate on servers that are configured as domain controllers.
  • We fixed an issue with Virtual Interrupt Notification Assert (VINA) interrupts.
  • We fixed an issue with HTTP caching that interferes with kiosk mode that targets Azure AD groups.
  • We fixed an issue that occurs when a Volume Shadow Copy Service (VSS) snapshot triggers on virtual machines (VM) that contain Resilient File System (ReFS) volumes. The triggered VSS snapshot fails with a time-out and prevents access to the ReFS volume for 30 minutes.
  • We fixed an issue that incorrectly logs Extensible Storage Engine Technology (ESENT) event 642 in the Application Event Log.
  • We fixed an issue with Administrative Template settings you configure using a Group Policy Object (GPO). When you change the value of the policy settings to NOT CONFIGURED, the system fails to remove the previous settings. This issue is most noticeable with roaming user profiles.
  • We fixed an issue that might cause a deadlock in Windows Virtual Desktop when a user disconnects before a driver fully loads
  • We fixed an issue that fails to show Extract all on the shortcut menu when you right-click an online-only ZIP file.
  • We updated the process for enrolling in online speech recognition. If you are already enrolled, you will see a message that asks you to review the new settings. If you choose not to contribute your speech data for human review, you can still use online speech recognition. The new settings contain one button to turn on online speech recognition and another button that turns on the collection of your voice clips. If you turn on the collection of your voice clips, you can turn it off at any time using the same button in the new settings page.
  • We fixed an issue that prevents the Start menu, Cortana, and tiles pinned to the Taskbar from opening. This issue occurs when an administrator copies an existing profile that has the Mandatory Profile check box selected.

Build 21296

Next up is Windows 10 Preview build 21296, which is for versions of Windows 10 21H1 that are currently testing on the Insider Program. Specifically it is available on the and brings the following changes:

  • We're starting to roll out an update to our converged clipboard history design (WIN + V) to support pinning, unpinning, deleting, and syncing individual entries. Appreciate your patience and feedback while we've been working on this. If you have any other feedback in this space, we welcome it in the Feedback Hub under Input and Language > Clipboard.
  • The ability to manage and create Storage Spaces from within Settings is now rolling out to all Insiders in the Dev Channel. If you have any feedback as you explore the changes, please file it under Files, Folders, and Online Storage > Storage spaces in the Feedback Hub.
  • 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. This updated redist adds vcruntime140_1.dll and fixes crashes occurring in a number of CAD applications.

Tip of the day:

Do you often experience PC freezes or crashs with Blue Screens of Death (BSOD)? Then you should use Windows Memory Diagnostic to test your computers RAM for any problems that might be caused from damaged memory modules. This is a tool built into Windows 10 which can be launched at startup to run various memory checks.

Luke Jones
Luke Jones
Luke has been writing about all things tech for more than five years. He is following Microsoft closely to bring you the latest news about Windows, Office, Azure, Skype, HoloLens and all the rest of their products.

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