.NET Framework October 2019 Security and Quality Rollup for Windows 10 Win Update

    .NET Framework October 2019 Security and Quality Rollup for Windows 10

    .NET Framework October 2019 Security and Quality Rollup for Windows 10

    Category: Win Update
    Posted: 09 Oct 2019

    Today, we are releasing the October 2019 Security and Quality Rollup and Cumulative Updates for .NET Framework.


    No new security fixes. See September 2019 Security and Quality Rollup for the latest security updates.

    Quality and Reliability

    This release contains the following quality and reliability improvements.


    • Addresses an issue that affects thread contention that occurs in BinaryFormatter.GetTypeInformation by using ConcurrentDictionary to handle multi-thread access.


    • Addresses an issue that might cause handle leaks to occur in scenarios that repeatedly load and unload Mscoree.dll.
    • Addresses rare cases that incorrectly cause process termination instead of delivering the expected NullReferenceException result.


    • Addresses an issue that affects a WPF ComboBox (or any Selector) within a DataGrid cell that can try to change its selection properties (SelectedIndex, SelectedItem, SelectedValue) when the cell’s data item is re-virtualized or removed from the underlying collection. This can occur if the Selector’s ItemSource property is data bound through the cell’s DataContext setting. Depending on the virtualization mode and the bindings that are declared for the selection properties, the symptoms can include unexpected changes (to null) of the data item’s properties, and unexpected displays (as null) of other data items that re-use the UI that was previously attached to the re-virtualized item.
    • Addresses an issue in which a WPF TextBox or RichTextBox element that has spell checking enabled crashes and returns an “ExecutionEngineException” error in some situations, including inserting text near a hyperlink.
    • Addresses an issue that affects Per-Monitor Aware WPF applications that host System-Aware or Unaware child windows and that run on .NET Framework 4.8. This .NET version occasionally crashes and returns a “System.Collections.Generic.KeyNotFoundException” exception.

    1 Base Class Library (BCL)
    2 Common Language Runtime (CLR)
    3 Windows Presentation Foundation (WPF)

    Getting the Update

    The Security and Quality Rollup is available via Windows Update, Windows Server Update Services, and Microsoft Update Catalog.

    Microsoft Update Catalog

    You can get the update via the Microsoft Update Catalog. For Windows 10, NET Framework 4.8 updates are available via Windows Update, Windows Server Update Services, Microsoft Update Catalog. Updates for other versions of .NET Framework are part of the Windows 10 Monthly Cumulative Update.

    Note: Customers that rely on Windows Update and Windows Server Update Services will automatically receive the .NET Framework version-specific updates. Advanced system administrators can also take use of the below direct Microsoft Update Catalog download links to .NET Framework-specific updates. Before applying these updates, please ensure that you carefully review the .NET Framework version applicability, to ensure that you only install updates on systems where they apply. The following table is for Windows 10 and Windows Server 2016+ versions.

    Product Version Cumulative Update
    Windows 10 1903 and Windows Server, version 1903 Catalog 4524100
    .NET Framework 3.5, 4.8 Catalog 4515871
    Windows 10 1809 (October 2018 Update) Windows Server 2019 Catalog 4524099
    .NET Framework 3.5, 4.7.2 Catalog 4515855
    .NET Framework 3.5, 4.8 Catalog 4515843
    Windows 10 1803 (April 2018 Update)
    .NET Framework 3.5, 4.7.2 Catalog 4520008
    .NET Framework 4.8 Catalog 4524098
    Windows 10 1709 (Fall Creators Update)
    .NET Framework 3.5, 4.7.1, 4.7.2 Catalog 4520004
    .NET Framework 4.8 Catalog 4524097
    Windows 10 1703 (Creators Update)
    .NET Framework 3.5, 4.7, 4.7.1, 4.7.2 Catalog 4520010
    .NET Framework 4.8 Catalog 4524096
    Windows 10 1607 (Anniversary Update) Windows Server 2016
    .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2 Catalog 4519998
    .NET Framework 4.8 Catalog 4524095

    Read more: https://devblogs.microsoft.com/dotne...uality-rollup/

    See also: Cumulative Update KB4524100 .NET Framework 3.5, 4.8 Windows 10 Oct. 8
    Brink's Avatar Posted By: Brink
    09 Oct 2019


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