July 21, 2022 - KB5015732 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 11
The July 21, 2022 update for Windows 11 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 Prerequisites and Restart requirement sections.
There are no new security improvements in this release. This update is cumulative and contains all previously released security improvements.
Quality and reliability improvements
1Windows Presentation Foundation (WPF)
WPF1 - Addresses an issue where invoking a synchronization Wait on the UI thread can lead to a render-thread failure, due to unexpected re-entrancy. Networking - 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 timeout. Possible workaround is disabling TLS 1.3 either via Switch.System.Net.DontEnableTls13 AppContext or via OS registry.
Known issues in this updateMicrosoft is not currently aware of any issues in this update.
How to get this updateInstall 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. Windows Update for Business No None. These changes will be included in the next security update to this channel. For more information about Windows Update for Business go to the Windows Update for Business website. 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.
For a list of the files that are provided in this update, download the file information for cumulative update.
PrerequisitesTo apply this update, you must have .NET Framework 3.5 or 4.8 installed.
Restart requirementYou 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.
July 2022 Cumulative Update Preview Updates for .NET Framework
Check Windows Updates
Direct download links for KB5015732 MSU file from Microsoft Update Catalog:
Download KB5015732 MSU for Windows 11 64-bit (x64) - 56.5 MB
Download KB5015732 MSU for Windows 11 ARM64 - 56.5 MB