Optional updates KB4571748 and KB4566116 for Windows 10 released

Martin Brinkmann
Aug 21, 2020
Windows, Windows 10, Windows Updates
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Microsoft released the optional updates KB4571748 and KB4566116 for Windows 10 versions 1809, 1903 and 1909 on August 20, 2020.

The preview updates are non-security in nature and designed for testing purposes (both for administrators but also Microsoft who collects Telemetry data). Most users should wait for the official release of these updates on the September 2020 Patch Tuesday.

Microsoft did add support for WSL 2 in Windows 10 version 1903 and 1909 in this release.

It is best not to install these updates on production machines, and to create system backups before the updates are installed.

Note that the updates are listed under optional updates in the Windows 10 Settings app under Update & Security > Windows Update.

The preview update for Windows 10 version 2004 is expected to be released next week.

KB4571748 for Windows 10 version 1809 and Windows Server 2019

Fixes and changes

  • Fixes a black screen issue in Windows Virtual Desktop during sign-in.
  • Fixed an issue with the GetConsoleWindow function.
  • Fixed a memory leak issue in Dynamic Data Exchange.
  • Fixed an issue that caused touchscreens to stop working after several sleep and wake cycles.
  • Fixed a child window flickering issue on server devices with stark visual contrasts.
  • Fixed a preview issue of .msg files in File Explorer.
  • Fixed an issue that caused all open UWP apps to close unexpectedly.
  • Fixed an issue that caused the Settings page to close unexpectedly.
  • Fixed an issue that caused profile folders to get very long (which might lead to max_path issues).
  • Fixed an issue with unexpected notifications displayed to the user.
  • Fixed a PowerShell console issue that created random line breaks.
  • Fixed an issue that prevented a delegated user with required privileges from importing Group Policy Objects
  • Fixed a Windows Management Instrumentation queries issue that could affect Patch Management.
  • Fixed an unnamed issue with object performance counters.
  • Fixed an OneDrive files on demand error on systems with User Experience Virtualization enabled. Fix requires setting the Dword HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\UEV\Agent\Configuration\ApplyExplorerCompatFix to 1.
  • Fixed an issue that caused applications to take a long time to open.
  • Fixed an AppLocker issue that prevented apps from running even if they were allowed to run.
  • Fixed an AppLocker issue that sometimes prevented applications from loading software modules.
  • Fixed a memory leak in the CryptCATAdminCalcHashFromFileHandle() function.
  • Fixed an issue that could prevent the cluster service from starting.
  • Addressed an issue that caused the Minimum Password Length Group Policy to have no effect.
  • Fixed an unnamed issue that caused systems to stop working and generate 7E stop codes.
  • Fixed a sign-in issue caused by typing a space before the username on first sign-in.
  • Fixed classification failures caused by the wrong User Principal Name.
  • Fixed a stop error on Hyper-V host.
  • Fixed an issue that displayed the Processor Frequency as 0.
  • Fixed a sleep system call issue on Glibc-2.31 or later on Windows Subsystem for Linux distributions.
  • Fixed shutdown delay issues caused by Microsoft Keyboard Filter Service.
  • Fixed a transient network disconnection issue caused by enabling packet capturing.
  • Fixed an issue that prevented connections from being responsive to TCP resets.
  • Fixed an issue that prevented the logging of events 4732 and 4733 for Domain-Local group membership changes.
  • Fixed a Security Assertion Markup Language scoping support issue in AD FS.
  • Fixed an issue that logged incorrect IP addresses in audit logs for Windows Transport requests.
  • Fixed an issue that caused Account activity cmdlets from executing.
  • Fixed a logging issue with Server Message Block.
  • Fixed an issue with the CsvFs driver.
  • Fixed an issue with the Remote Desktop Session Host that failed to open the Start Menu for mandatory user profiles.
  • Fixed an issue that could cause stop error 0xC00002E3 at startup.
  • Fixed a Visual Basic 6.0 runtime error.
  • Added new but unnamed functionality to the robocopy command
  • Support for Direct Server Return configuration for container load balancers introduced.
  • Time zone information update for Yukon, Canada
  • Ability to sync Microsoft Edge IE Mode unidirectional session cookies.

Known Issues 

  1. The long standing Asian language packs issue that may throw the error "0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND".
    • Microsoft still suggests to either uninstall and reinstall the language packs, or to reset the PC.
  2. Microsoft Edge legacy error "0x80704006. Hmmmm…can’t reach this page" when loading sites that use non-standard ports.
    • Microsoft suggests to upgrade to the new Chromium-based Edge browser, to use IE11, or update Windows 10 to a newer version.

KB4566116 for Windows 10 version 1903 and 1909

KB4566116 KB4571748 windows 10 updates

Fixes and changes

  • Fixed a pinned Add-ins issue in Outlook that made it become unresponsive.
  • Ability to sync Microsoft Edge IE Mode unidirectional session cookies.
  • Fixed an issue that could cause the hard drive to fill up in "certani error situations".
  • Fixed a Microsoft Gaming Services startup issue because of error 15612.
  • Fixed a Visual Basic 6.0 issue that prevent apps from using ListView in MSCOMCTL.OCX.
  • Fixed an issue in VB6 that could cause it to stop working.
  • Fixed a black screen display issue in Windows Virtual Desktop.
  • Time zone information for Yukon, Canada updated.
  • Fixed an issue that prevented the deletion of Notification state registries for certain apps even after the user profile was deleted.
  • Fixed a stop working error in apps that use msctf.dll.
  • Fixed a visual offset issue on touchscreens.
  • Fixed an issue that prevented Cortana Smart lighting from working as expected.
  • Fixed a new child window flickering issue.
  • Fixed an issue that caused the Settings page to close unexpectedly.
  • Fixed a .msg file preview issue in Explorer.
  • Fixed an issue that caused all UWP apps that are open to close unexpectedly.
  • Fixed an issue that prevented Windows 8.1 apps from projecting to a secondary display.
  • Fixed an issue that caused user profile folder names to get excessively long.
  • Fixed an importing Group Policy Object importing issue for delegated users.
  • Fixed an issue that caused the Event Viewer Microsoft Management Console to stop working.
  • Fixed an issue that caused a high volume of events to be sent during real-time sessions.
  • Fixed an unnamed issue with object performance counters.
  • Fixed a Microsoft OneDrive files on demand issue.
  • Fixed an issue that caused the promotion of a server to a domain controller to fail.
  • Fixed an AppLocker publisher rules issue that could prevent apps from loading software modules.
  • Fixed an AppLocker issue that could cause prevent apps from being run.
  • Fixed a Work Folder sync issue that could throw the error "ync stopped, Can't encrypt files".
  • Fixed a memory leak in CryptCATAdminCalcHashFromFileHandle().
  • Fixed an issue that prevents users from unlocking devices if a space was typed before the username on first sign-in.
  • Fixed an applications taking a long time to start issue.
  • Fixed a system stop working issue with 7E stop code.
  • Fixed classification failures caused by wrong U'PN.
  • Fixed a sleep system call issue on WSL 1 distributions.
  • Support for WSL 2 added.
  • Fixed an issue that displayed the processor frequency as 0.
  • Fixed a shutdown delay issue if the Microsoft Keyboard Filter Service was running.
  • Fixed a connection sharing issue from a host's virtual private network connection.
  • Addressed an issue with sourcing the root domain directory partition of a global catalog from a child domain controller (DC) when promoting, unhosting, or rehosting the DC.
  • Fixed an issue that failed to log events 4732 and 4733.
  • Fixed an issue that could prevent the cluster service from starting.
  • Fixed an issue with the Minimum Password Length policy.
  • Fixed a written data loss error.
  • Fixed an issue with Server Message Block.

Known Issues

Microsoft did not list any known issues.

Now You: Do you install preview updates on your machines?

Summary
Optional updates KB4571748 and KB4566116 for Windows 10 released
Article Name
Optional updates KB4571748 and KB4566116 for Windows 10 released
Description
Microsoft released the optional updates KB4571748 and KB4566116 for Windows 10 versions 1809, 1903 and 1909 on August 20, 2020.
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Comments

  1. Dan Donx said on January 15, 2023 at 10:29 am
    Reply

    What mental age of reader are you targeting with the first sentence? 10?

    Why not write an article on how to *avoid* upgrading from W10 to W11. Analogous to those like me who avoided upgrading from 7 to 10 for as long as possible.

    If your paymaster Microsoft permits it, of course.

  2. Dexter said on January 15, 2023 at 11:14 am
    Reply

    5. Rufus
    6. Ventoy

    PS. I hate reading these “SEO optimized” articles.

    1. cdr said on January 15, 2023 at 3:32 pm
      Reply

      I used Rufus to create an installer for a 6th gen intel i5 that had MBR. It upgraded using Setup. No issues except for Win 11 always prompting me to replace my local account. Still using Win 10 Pro on all my other PCs to avoid the bullying.

  3. sv said on January 15, 2023 at 6:40 pm
    Reply

    bit pointless to upgrade for the sake of upgrading as you never know when you’ll get locked out because ms might suddenly not provide updates to unsupported systems.

    ps…. time travelling?
    written. Jan 15, 2023
    Updated • Jan 13, 2023

    1. Martin Brinkmann said on January 16, 2023 at 5:49 am
      Reply

      This happens when you schedule a post in WordPress and update it before setting the publication date.

  4. Anonymous said on January 16, 2023 at 8:24 am
    Reply

    Anyone willing to downgrade to this awful OS must like inflicting themselves with harm.

  5. basingstoke said on January 16, 2023 at 11:18 am
    Reply

    I have become convinced now that anybody who has no qualms with using Windows 11/10 must fit into one of the following brackets:

    1) Too young to remember a time before W10 and W11 (doesn’t know better)

    2) Wants to play the latest games on their PC above anything else (or deeply needs some software which already dropped W7 support)

    3) Doesn’t know too much about how computers work, worried that they’d be absolutely lost and in trouble without the “”latest security””

    4) Microsoft apologist that tries to justify that the latest “features” and “changes” are actually a good thing, that improve Windows

    5) Uses their computer to do a bare minimum of like 3 different things, browse web, check emails, etc, so really doesn’t fuss

    Obviously that doesn’t cover everyone, there’s also the category that:

    6) Actually liked W7 more than 10, and held out as long as possible before switching, begrudgingly uses 10 now

    Have I missed any group off this list?

    1. Heinz Strunk said on September 19, 2023 at 3:57 pm
      Reply

      You have missed in this group just about any professional user that uses business software like CAD programs or ERP Programs which are 99% of all professional users from this list.

      Linux doesn’t help anyone who is not a linux kid and apple is just a fancy facebook machine.

  6. ilev said on August 24, 2023 at 7:34 pm
    Reply

    Microsoft has removed KB5029351 update

    1. EP said on August 24, 2023 at 9:21 pm
      Reply

      only from windows update though
      KB5029351 is still available from the ms update catalog site

  7. Anonymous said on August 24, 2023 at 11:05 pm
    Reply

    1. This update is labaled as PREVIEW if it causes issues to unintelligent people, then they shouldn’t have allowed Preview updates ot install.

    2. I have installed it in a 11 years old computer, and no problems at all.

    3. Making a big drama over a bluescreen for an updated labeled as preview is ridiculous.

    This is probably another BS internet drama where people ran programs and scripts that modified the registry until they broke Windows, just for removing stuff that they weren’t even using just for the sake of it.
    Maybe people should stop playing geeks and actually either use Windows 10 or Windows 11, but don’t try to modify things just for the sake of it.

    Sometimes removing or stopping things (like defender is a perfect example) only need intelligence, not scripts or 3rd party programs that might mess with windows.

  8. john said on August 24, 2023 at 11:17 pm
    Reply

    Windows 11 was a pointless release, it was just created because some of the Windows team wanted to boost sales with some sort of new and improved Windows 10. Instead, Microsoft cannot support one version well let alone two.

    1. John G. said on August 25, 2023 at 12:08 pm
      Reply

      Windows 11 is the worst ugly shame by Microsoft ever. They should release with every new W11 version a complete free version of Starallback inside just to make this sh** OS functionally again.

  9. EP said on August 25, 2023 at 3:10 pm
    Reply

    motherboard maker MSI has recently released a statement regarding the “unsupported processor” blue screen error for their boards using Intel 600/700 series chipsets & to avoid the KB5029351 Win11 update:
    https://www.msi.com/news/detail/MSI-On–UNSUPPORTED-PROCESSOR–Error-Message-of-Windows-11-Update-KB5029351-Preview-142215

  10. EP said on August 29, 2023 at 7:32 pm
    Reply

    check out the following recent articles:

    Neowin – Microsoft puts little blame on its Windows update after UNSUPPORTED PROCESSOR BSOD bug:
    https://www.neowin.net/news/microsoft-puts-little-blame-on-its-windows-update-after-unsupported-processor-bsod-bug/

    BleepingComputer – Microsoft blames ‘unsupported processor’ blue screens on OEM vendors:
    https://www.bleepingcomputer.com/news/microsoft/microsoft-blames-unsupported-processor-blue-screens-on-oem-vendors/

  11. Leonard Britvolli said on August 30, 2023 at 10:33 pm
    Reply

    While there may be changes or updates to the Windows 10 Store for Business and Education in the future, it is premature to conclude that it will be discontinued based solely on rumors.

  12. sembrador said on September 5, 2023 at 9:32 pm
    Reply

    My advice, I left win 15 years ago. Now I’m a happy linux user (linuxmint) but there is Centos, Fedora, Ubuntu depending on your needs.

  13. EP said on September 6, 2023 at 11:55 am
    Reply

    motherboard maker MSI has recently released new BIOS/firmware updates for their Intel 600 & 700 series motherboards to fix the “UNSUPPORTED_PROCESSOR” problem (Sept. 6):

    https://www.msi.com/news/detail/Updated-BIOS-fixes-Error-Message–UNSUPPORTED-PROCESSOR–caused-BSOD-on-MSI-s-Intel-700-and-600-Series-Motherboards-142277

  14. Raphael Benzo said on September 24, 2023 at 9:52 pm
    Reply

    I try to disable the Diagnostics Tracking Service (Connected Devices Platform User Services) but it wont let me disable it, any help will be greatly appreciated.
    Tank you for your help

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