Today, we are releasing the February 2022 Cumulative Update Preview for .NET Framework.
The February Security and Quality Rollup Update does not contain any new security fixes. See January 2022 Security and Quality Rollup for the latest security updates.
Quality and Reliability
This release contains the following quality and reliability improvements.
Addresses an issue when Ssl negotiation can hang indefinitely when client certificates are used when TLS 1.3 is negotiated. Before the change renegotiation (PostHandshakeAuthentiction) would fail and SslStream or HttpWebRequest would observe a timeout.
Addresses a leak of IRawElementProviderSimple objects which was introduced in .NET Framework 4.8. This is an opt-in fix, add the following compatibility switch to the app.config file in order to dispose the accessible objects:
<!– AppContextSwitchOverrides values are in the form of ‘key1=true|false;key2=true|false –>
Note: When the accessibility server application opts into this fix, the accessibility client will receive errors when accessing the disconnected provider. This is expected because the corresponding control window is destroyed. Previous behavior where the provider was returning information for destroyed controls was incorrect.
The Cumulative Update Preview is available via Windows Update, Windows Server Update Services, and 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.
Microsoft server operating systems version 21H2
Windows 10 21H2
Windows 10 21H1
Windows 10, version 20H2 and Windows Server, version 20H2
Windows 10 1809 (October 2018 Update) and Windows Server 2019
Previous Monthly Rollups
The last few .NET Framework Monthly updates are listed below for your convenience:
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