KB4601554 Cumulative Update .NET Framework 3.5 and 4.8 for Windows 10 Win Update

    KB4601554 Cumulative Update .NET Framework 3.5 and 4.8 for Windows 10

    KB4601554 Cumulative Update .NET Framework 3.5 and 4.8 for Windows 10

    Preview for Windows 10 version 2004 and 20H2- February 24
    Category: Win Update
    Last Updated: 12 May 2021 at 20:05

    UPDATE 5/11: KB4601554 Cumulative Update .NET Framework 3.5 and 4.8 for Windows 10


    February 24, 2021 - KB4601554 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10, version 2004, Windows Server, version 2004, Windows 10, version 20H2, and Windows Server, version 20H2

    The February 24, 2021 update for Windows 10, version 2004, Windows Server, version 2004, Windows 10, version 20H2, and Windows Server, version 20H2 includes cumulative reliability improvements in .NET Framework 3.5 and 4.8. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequsites and Restart requirement sections.

    Quality and reliability improvements

    CLR1 - Addresses an issue where the entire process would be torn down when a NullReferenceException propagated out of an exception filter.
    - Addresses an issue with slowdowns that could occur when making large numbers of devirtualized calls into MarshalByRefObject-derived code.
    WPF2 - Addresses an issue with lag responding to typing in TextBox, when spell-checking is enabled that was introduced in an update earlier this year.
    - Addresses an issue with a leak of touch-related resources, including OS handles, when closing a window. The leak only occurs when a touch device is active, and only for windows whose HwndSource is created directly by the app.
    - Addresses a crash when docking a window within Visual Studio, or, more generally, disposing an HwndSource whose RootVisual is null.
    Winforms - Addresses an issue in ComboBox drop down item bounding rectangle as exposed to the accessibility tools, where we did not take into account that some items might be scrolled out of view, we had always started counting items from the first visible one, and thus item rectangle location was incorrect.
    - Implemented ScrollItemPattern (IScrollItemProvider (uiautomationcore.h) - Win32 apps | Microsoft Docs) for ComboBox drop down items.
    1 Common Language Runtime (CLR)
    2 Windows Presentation Foundation (WPF)

    How to get this update

    Install this update

    Release Channel Available Next Step
    Windows Update and Microsoft Update Yes To download and install this update, go to Settings > Update & Security > Windows Update, and then select Check for updates.
    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.

    Prerequisites

    To apply this update, you must have .NET Framework 3.5 or 4.8 installed.

    Restart requirement

    You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

    How to obtain help and support for this update


    Known issues in this update

    Microsoft is not currently aware of any issues in this update.


    Source: https://support.microsoft.com/en-us/...3-226f7798225a

    See also: https://devblogs.microsoft.com/dotne...-version-20h2/


    Direct download links for KB4601554 MSU file from Microsoft Update Catalog:

    Download KB4601554 MSU for Windows 10 v2004 and 20H2 32-bit (x86) - 41.6 MB

    Download KB4601554 MSU for Windows 10 v2004 and 20H2 64-bit (x64) - 65.2 MB

    Download KB4601554 MSU for Windows 10 v2004 and 20H2 ARM64 - 41.6 MB
    Brink's Avatar Posted By: Brink
    24 Feb 2021


  1. Posts : 92
    Windows 10 - 21H2
       #1

    For a 28 day month, this has been a busy month for updates. Net updates on the 2nd and 24th. The big update on the 9th. The Adobe Flash remover on the 16th. The Remediation update on the 19th.

    So, hopefully we can get a breather until the 9th.
      My Computer


  2. Posts : 22,767
    Win 10 Home ♦♦♦19045.4123 (x64) [22H2]
       #2

    lirene said:
    For a 28 day month, this has been a busy month for updates. Net updates on the 2nd and 24th. The big update on the 9th. The Adobe Flash remover on the 16th. The Remediation update on the 19th.

    So, hopefully we can get a breather until the 9th.


    Sorry. No breathers...
    KB4601382 CU Windows 10 v2004 build 19041.844 and v20H2 19042.844
      My Computer


  3. Posts : 92
    Windows 10 - 21H2
       #3

    yeah, I don't install the optional CU previews and I wait until the patch day for all that.

    All in all, this update queued itself, I downloaded it directly, restarted, and life goes on. I'll see later if the laptop download of this Net update prompts for a restart (quite a few times it doesn't).
      My Computer


 

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