.NET Framework February Security And Quality Rollup Released

You can get the Security and Quality Rollup via Windows Update, Windows Server Update Services, and Microsoft Update Catalog.

Recently, Microsoft released February 2021 Security and Quality Rollup Updates for .NET Framework.

The release contains a security update CVE-2021-24111 , which addresses a denial of service vulnerability in .NET Framework.

In ASP.NET release addresses an issue where after installing the update released on October 20th, some ASP.Net applications fail during precompilation . The reliability of automatic Native Image generation task has been improved. 

A  hang when scrolling to the end of a TreeView, in WPF has been fixed, when layout rounding is enabled and DPI scaling is not 100%.

The release comes with a Known issues: WPF apps may crash with a callstack . This happens when disposing an HwndSource whose RootVisual is null, a situation that arises in Visual Studio when docking or splitting windows, and could arise in other apps.

To work around this, you can set two AppContext switches using one of the methods described in AppContext Class (System) under the heading - AppContext for library consumers.

You can get the Security and Quality Rollup via Windows Update, Windows Server Update Services, and Microsoft Update Catalog. While the Security Only Update is available through Windows Server Update Services and Microsoft Update Catalog.