Beta update

Windows 10 update KB4571744 (preview) releases for version 2004

The KB4571744 update is now available as a preview for Windows 10 version 2004 to fix several issues, and here's all you need to know.

Windows 10 KB4571744 update download

Microsoft is now rolling out the KB4571744 update  as an optional install for devices running the Windows 10 version 2004, May 2020 Update. This is the sixth update releasing the latest version of the operating system, and it’s available as a preview ahead of the September 2020 Patch Tuesday release.

The KB4571744 update bumps the version number to build 19041.488, and according to the company, brings  24-bit mode for Dolby Atmos for Headphones and DTS Headphones. Fixes blurry sign in screen, Windows Update becoming unresponsive when checking for updates, File Explorer when stops working when you browse directories, and apps taking a long time to open. 

The optional update also improves tablet experience for convertible or hybrid devices in docked scenarios,  Windows Hello enrollment pages for face and fingerprint setup, and more.

Update KB4571744 for Windows 10 version 2004

Microsoft has announced KB4571744 in the Windows support site, and it’s referred as “September 3, 2020—KB4571744 (OS Build 19041.488) Preview” If you’re already running the Windows 10 May 2020 Update, this update will address these problems:

  • Provides the ability for Dolby Atmos for Headphones and DTS Headphone: X to be used in 24-bit mode on devices that support 24-bit audio.
  • Addresses an issue with Server Message Block (SMB).
  • Fixes a issue that might prevent ActiveX content from loading.
  • Addresses an issue that displays a black screen to Windows Virtual Desktop (WVD) users when they attempt to sign in.
  • Fixes a issue to reduce the likelihood of missing fonts.
  • Addresses an issue that prevents users from reducing the size of a window in some cases.
  • Fixes a issue that causes the touch keyboard to close when you touch any key.
  • Addresses an issue that adds an unwanted keyboard layout as the default after an upgrade or migration even if you have already removed the layout.
  • Fixes a issue the prevents applications from closing even though programming code directs them to close.
  • Addresses an issue that causes attempts to take a screenshot of a window using the PrintWindow API to fail.
  • Fixes a issue with pinned Add-ins that cause Microsoft Outlook to become unresponsive.
  • Addresses an issue with rendering PeerDist-encoded content in Internet Explorer and Microsoft Edge.
  • Fixes a issue that might cause apps that use the custom text wrapping function to stop working in certain scenarios.
  • Addresses an issue with Start menu apps and tiles in virtual desktop infrastructure (VDI) environments.
  • Fixes a issue that generates an error when printing to a document repository.
  • Addresses an issue that prevents Visual Basic 6.0 (VB6) applications from using ListView in MSCOMCTL.OCX after upgrading to Windows 10, version 1903 and later.
  • Addresses a runtime error that causes VB6 to stop working when duplicate windows messages are sent to WindowProc().
  • Fixes a issue that causes a stop error when the initialization of the graphics adapter fails.
  • Addresses an issue with a memory leak in ctfmon.exe that occurs when you refresh an application that has an editable box.
  • Fixes a issue that truncates a potential list of characters (candidates) when you type characters in the Simplified Chinese (Pinyin) input method editor (IME).
  • Addresses an issue that prevents the first keystroke from being recognized correctly in the DataGridView cell.
  • Fixes a issue with a blurry sign in screen.
  • Addresses an issue with Windows Update becoming unresponsive when checking for updates.
  • Fixes a issue that prevents the correct lock screen from appearing.
  • Addresses an issue that causes File Explorer to stop working when you browse directories of raw images and other file types.
  • Addresses stop error 0xC2 in usbccgp.sys.
  • Fixes a issue that causes an application that uses msctf.dll to stop working, and the 0xc0000005 (Access violation) exception appears.
  • Addresses an issue with Dynamic Data Exchange (DDE) that causes a memory leak when multiple clients connect to the same server.
  • Fixes a issue that prevents Cortana Smart lighting from working as expected if you shut down the machine while Fast Shutdown is enabled.
  • Addresses an issue that prevents the IME user dictionary from being used when leveraging folder redirection with user profiles.
  • Fixes a issue that causes Microsoft Office applications to close unexpectedly when using a Korean IME.
  • Addresses an issue that displays incorrect folder properties in File Explorer when the path is longer than MAX_PATH.
  • Fixes a issue that causes the Event Viewer Microsoft Management Console (MMC) to stop working when the secondary monitor is above the primary monitor.
  • Addresses an issue that prevents the migration of the Windows Remote Management (WinRM) service startup type.
  • Fixes a issue with object performance counters.
  • Addresses an issue that prevents Microsoft User Experience Virtualization (UE-V) settings from roaming to enable the signature files that are used for new messages, forwarded messages, and replies.
  • Fixes a issue that prevents users from setting the REG_EXPAND_SZ keys in some automated scenarios.
  • Addresses an issue with the EnhancedAppLayerSecurity node in modern device management (MDM) that prevents its setting from being applied correctly to client devices.
  • Fixes a issue that causes a memory leak in the LsaIso.exe process when the server is under a heavy authentication load and Credential Guard is enabled.
  • Addresses an issue that might cause a delay of up to two minutes when signing in or unlocking a session on Hybrid Azure Active Directory-joined machines.
  • Fixes a issue that prevents hash signing from working correctly when using the Microsoft Platform Crypto Provider for Trusted Platform Modules (TPM).
  • Addresses an issue that continues to display the previous username hint in the smart card sign in box after a different user has used the machine with domain credentials.
  • Fixes a issue that causes communication with the TPM to time out and fail.
  • Addresses an issue that causes AOVPN user tunnels to use an incorrect certificate.
  • Fixes a issue with AOVPN that occurs when user and device tunnels are configured to connect to the same endpoint.
  • Addresses an issue that causes VPN apps to stop working in some cases when they attempt to enumerate VPN profiles.
  • Fixes a issue that causes the Optimize Drives dialog to incorrectly report that previously optimized drives need to be optimized again.
  • Addresses an issue that fails to turn off the host memory buffer (HMB) when you force the shutdown of a device. As a result, solid-state drives (SSDs) do not delete HMB contents.
  • Fixes a issue that prevents apps from downloading an update or opening in certain scenarios.
  • Addresses an issue that sometimes prevents AppLocker from running an application whose publisher rule allows it to run.
  • Fixes a issue in which AppLocker publisher rules might sometimes prevent applications from loading software modules; this can cause partial application failure.
  • Addresses an issue that causes the promotion of a server to a domain controller to fail.
  • Fixes a issue that prevents you from unlocking a device if you typed a space before the username when you first signed in to the device.
  • Addresses an issue that causes a system to stop working and generates a 7E stop code.
  • Fixes a issue that causes applications to take a long time to open.
  • Addresses classification failures caused by the wrong User Principal Name (UPN).
  • Addresses an issue in cluster scenarios that causes handles to .vmcx and .vmrs files to become invalid after storage failover.
  • Fixes a issue with interrupt targeting that might cause an interrupt to arrive at an incorrect processor.
  • Addresses an issue that causes delays during shutdown when running the Microsoft Keyboard Filter Service.
  • Fixes a issue that causes a machine to request a new IP address after authentication.
  • Addresses an issue that causes the Background Intelligent Transfer Service (BITS) to download data while a device is in cellular mode without explicit user permission.
  • Fixes a issue that prevents Always On VPN (AOVPN) from automatically reconnecting when resuming from Sleep or Hibernate.
  • Addresses an issue that might cause a stop error (0xC00002E3) at startup. This issue occurs after installing certain Windows Updates that were released on or after April 21, 2020.
  • Fixes a issue that might cause stop error 7E in nfssvr.sys on servers running the Network File System (NFS) service.
  • Addresses an issue that causes SMB to incorrectly use the original, cached non-Continuous Available handle to a file. This handle becomes invalid after a network error or storage failover.
  • Fixes a issue that causes the loss of written data when an application opens a file and writes to the end of the file in a share folder.
  • Addresses an issue with some apps, such as Microsoft Excel, that occurs when using the Microsoft Input Method Editor (IME) for Chinese and Japanese languages.
  • Provides the ability to sync the Microsoft Edge IE Mode unidirectional session cookie when an administrator configures the session cookie.
  • Improves the tablet experience for convertible or hybrid devices in docked scenarios.
  • Improves the user experience of the Windows Hello enrollment pages for face and fingerprint setup.
  • Prevents accounts from a different tenant from signing in to a Surface Hub device.
  • Updates time zone information for the Yukon, Canada.

You can download the updates to install them manually for version 2004 with the links below:

Uninstall update KB4571744 to fix problems

If the KB4571744 update is causing issues on your device, you can always uninstall it to revert the changes.

To uninstall KB4571744 or any other quality update on Windows 10, use these steps:

  1. Open Start.

  2. Search for Command Prompt, right-click the top result and select the Run as administrator option.

  3. Type the following command to view the update history and press Enter:

    wmic qfe list brief /format:table
  4. Check the Windows Update history of your device, and identify the update by its HotFixID and InstalledOn information.

  5. Type the following command to uninstall the update from your computer and press Enter:

    wusa /uninstall /kb:4571744

    In the command, replace “4571744” for KB number that correspond to the update that you’re trying to uninstall. For example, if you’re trying to uninstall update KB4571744, then the number that you can have to use in the command is “4571744.”

  6. Click the Yes button.

  7. Continue with the on-screen directions (if applicable).

Once you complete the steps, the recently installed update will be removed from your computer fixing any issues as a result of the release.

If your computer won’t boot after installing KB4571744, you can remove update from the Advanced startup environment using these steps.

Download September 2020 update for Windows 10

These updates are available immediately, they’ll download and install automatically, but you can always force the update from Settings Update & Security > Windows Update and clicking the Check for updates button. If you’re downloading an optional update, then you’ll also need to click the Download and install option. You can find more details about the most recent updates in the Windows 10 update history tracker guide.