KB4594440 CU Windows 10 v2004 build 19041.631 and v20H2 19042.631 Win Update

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    KB4594440 CU Windows 10 v2004 build 19041.631 and v20H2 19042.631

    KB4594440 CU Windows 10 v2004 build 19041.631 and v20H2 19042.631

    Out-of-band Cumulative Update - November 19
    Category: Win Update
    Last Updated: 23 Nov 2020 at 11:41

    If you already updated to 661 or 662, then you will not need to manually download and install 631 since 661 and 662 is a higher build. No need to do anything.



    November 19, 2020 - KB4594440 (OS Builds 19041.631 and 19042.631) Out-of-band

    Applies to: Windows 10 version 2004 all editions, Windows Server version 2004, Windows 10 version 20H2 all editions, Windows Server version 20H2 all editions

    11/10/20
    IMPORTANT Because of minimal operations during the holidays and the upcoming Western new year, there won’t be any preview releases for the month of December 2020. Monthly servicing will resume with the January 2021 security releases.


    UPDATED 11/19/20
    For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. To view other notes and messages, see the Windows 10, version 2004 update history home page.
    Note Follow @WindowsUpdate to find out when new content is published to the release information dashboard.


    Highlights

    • Updates an issue that might cause Kerberos authentication and ticket renewal issues that are related to the implementation of CVE-2020-17049.

    Improvements and fixes

    Windows 10, version 20H2

    This non-security update includes quality improvements. Key changes include:

    • This build includes all the improvements from Windows 10, version 2004.
    • No additional issues were documented for this release.

    Windows 10, version 2004

    This non-security update includes quality improvements. Key changes include:

    • Addresses issues with Kerberos authentication related to the PerformTicketSignature registry subkey value in CVE-2020-17049, which was a part of the November 10, 2020 Windows update. The following issues might occur on writable and read-only domain controllers (DC):
      • Kerberos service tickets and ticket-granting tickets (TGT) might not renew for non-Windows Kerberos clients when PerformTicketSignature is set to 1 (the default).
      • Service for User (S4U) scenarios, such as scheduled tasks, clustering, and services for line-of-business applications, might fail for all clients when PerformTicketSignature is set to 0.
      • S4UProxy delegation fails during ticket referral in cross-domain scenarios if DCs in intermediate domains are inconsistently updated and PerformTicketSignature is set to 1.

    If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.

    Windows Update Improvements
    Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.


    Known issues in this update

    Symptom Workaround
    Users of the Microsoft Input Method Editor (IME) for Japanese or Chinese languages might experience issues when attempting various tasks. You might have issues with input, receive unexpected results, or might not be able to enter text. For more information about the issues, workaround steps, and the currently resolved issues, please see KB4564002
    System and user certificates might be lost when updating a device from Windows 10, version 1809 or later to a later version of Windows 10. Devices will only be impacted if they have already installed any Latest cumulative update (LCU) released September 16, 2020 or later and then proceed to update to a later version of Windows 10 from media or an installation source which does not have an LCU released October 13, 2020 or later integrated. This primarily happens when managed devices are updated using outdated bundles or media through an update management tool such as Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager. This might also happen when using outdated physical media or ISO images that do not have the latest updates integrated.

    Note Devices using Windows Update for Business or that connect directly to Windows Update are not impacted. Any device connecting to Windows Update should always receive the latest versions of the feature update, including the latest LCU, without any extra steps.
    If you have already encountered this issue on your device, you can mitigate it within the uninstall window by going back to your previous version of Windows using the instructions here. The uninstall window might be 10 or 30 days depending on the configuration of your environment and the version you’re updating to. You will then need to update to the later version of Windows 10 after the issue is resolved in your environment. Note Within the uninstall window, you can increase the number of days you have to go back to your previous version of Windows 10 by using the DISM command /Set-OSUninstallWindow. You must make this change before the default uninstall window has lapsed. For more information, see DISM operating system uninstall command-line options.

    We are working on a resolution and will provide updated bundles and refreshed media in the coming weeks.

    How to get this update

    Before installing this update

    Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

    If you are using Windows Update, the latest SSU (KB4586864) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

    Install this update

    Release Channel Available Next Step
    Windows Update or Microsoft Update No See the other options below..
    Microsoft Update Catalog Yes To get the standalone package for this update, go to the Microsoft Update Catalog website.
    Windows Server Update Services (WSUS) No You can import this update into WSUS manually. See the Microsoft Update Catalog for instructions.

    File information

    For a list of the files that are provided in this update, download the file information for cumulative update 4594440.

    Note Some files erroneously have “Not applicable” in the “File version” column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.


    Source: https://support.microsoft.com/en-us/help/4594440


    See also: https://techcommunity.microsoft.com/...ce/ba-p/222376


    Direct download links for KB4594440 MSU file from Microsoft Update Catalog:

    Download KB4594440 MSU for Windows 10 v2004 and v20H2 32-bit (x86) - 114.0 MB

    Download KB4594440 MSU for Windows 10 v2004 and v20H2 64-bit (x64) - 351.2 MB

    Download KB4594440 MSU for Windows 10 v2004 and v20H2 ARM64 - 387.0 MB
    Brink's Avatar Posted By: Brink
    19 Nov 2020

  1. steve108's Avatar
    Posts : 12,029
    19041.928 - 2004/20H1 Home x64
       #1

    And it's not a preview or preview-preview KB for a change Hasn't been offered on this PC yet which is on 10.0.19041.630 .
      My Computer

  2. Brink's Avatar
    Posts : 56,814
    64-bit Windows 10 Pro for Workstations build 21376
    Thread Starter
       #2

    steve108 said:
    And it's not a preview or preview-preview KB for a change Hasn't been offered on this PC yet which is on 10.0.19041.630 .
    Hello Steve,

    631 is a standalone update that will need to manually downloaded and installed (if wanted) instead of via Windows Update.
      My Computers

  3. kado897's Avatar
    Posts : 39,962
    Windows 10 Home 64bit v20H2 and insider builds
       #3

    Isn't Kerberos an enterprise thing?
      My Computer

  4. steve108's Avatar
    Posts : 12,029
    19041.928 - 2004/20H1 Home x64
       #4

    Brink said:
    Hello Steve,

    631 is a standalone update that will need to manually downloaded and installed (if wanted) instead of via Windows Update.
    @Brink, Hello and thanks. Hmmm, why is that? Must say I don't recall/forgot what Kerberos is Kerberos (protocol) - Wikipedia
      My Computer

  5. Brink's Avatar
    Posts : 56,814
    64-bit Windows 10 Pro for Workstations build 21376
    Thread Starter
       #5

    steve108 said:
    @Brink, Hello and thanks. Hmmm, why is that? Must say I don't recall/forgot what Kerberos is Kerberos (protocol) - Wikipedia
    661 was unofficially released early, so it's just a matter of waiting until it or higher than 631 build is officially released.
      My Computers

  6. IronZorg89's Avatar
    Posts : 2,316
    Windows 10 pro x64-bit
       #6

    Brink said:
    661 was unofficially released early, so it's just a matter of waiting until it or higher than 631 build is officially released.
    Thx for the explanation because this new release get me completely discombobulated. I am right now on .661 (second non-production rig) and was wondering if I were ahead with a preview release.
      My Computers

  7. steve108's Avatar
    Posts : 12,029
    19041.928 - 2004/20H1 Home x64
       #7

    IronZorg89 said:
    Thx for the explanation because this new release get me completely discombobulated. I am right on .661 and was wondering if I were ahead with a preview release.
    They better make the next release .662 or higher to keep us straight then and it should include .631 and .661 . Are we having fun yet?
      My Computer

  8. IronZorg89's Avatar
    Posts : 2,316
    Windows 10 pro x64-bit
       #8

    steve108 said:
    They better make the next release .662 or higher to keep us straight then and it should include .631 and .661 . Are we having fun yet?
    I think COVID-19 & telecommuting are starting to have their real toll on everything including Redmond... Not too much fun!
      My Computers

  9. steve108's Avatar
    Posts : 12,029
    19041.928 - 2004/20H1 Home x64
       #9

    IronZorg89 said:
    I think COVID-19 & telecommuting are starting to have their real toll on everything including Redmond... Not too much fun!
    Well from some of the weird problems people report here and elsewhere, I'm grateful for this forum and that fact that the PCs I'm responsible for maintaining are okay.

    But yeah, it seems to be a full-time job looking here and elsewhere to keep them functioning without issue - for that reason they're all basically on 20H1/2004.630 for now
      My Computer


 
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