Note
Revised July 7, 2025: Updated 'How to get this update' section.
Note
- Release Date:
November 8, 2022 - Version:
.NET Framework 3.5 and 4.8.1
The November 8, 2022 update for Windows 11, version 22H2 includes cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. 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.
Summary
Security Improvements
This security update addresses a vulnerability which exists in System.Data.SqlClient and Microsoft.Data.SqlClient libraries where a timeout occurring under high load can cause incorrect data to be returned as the result of an asynchronously executed query or command. For more information please see CVE-2022-41064.
Quality and Reliability Improvements
| WPF1 | - Addresses an issue where a FailFast crash could occur when using WebBrowser.NavigateToString. - Addresses an ArgumentOutOfRangeException that can arise when calling ListBox.ScrollIntoView while there are pending changes to the visual tree that will change or clear the underlying ItemsCollection. - Addresses an ArgumentException "Width and Height must be non-negative" that can arise in an ItemsControl with grouping enabled, custom margins on the GroupItems, collapse/expand of GroupItems enabled, and run in high-DPI. - Addresses an issue where the opt-out switch Switch.System.Windows.Controls.ToolTip.OptOutOfWCAG21ToolTipBehavior didn't quite restore the 4.8 behavior, in particular the way it honors Switch.UseLegacyToolTipDisplay (which controls whether keyboard tooltip behavior is enabled). |
|---|---|
| .NET Runtime | - Address crashes that could occur if ilasm.exe failed to establish temporary PDB file alongside the output file. |
1Windows Presentation Foundation (WPF)
Known issues in this update
Microsoft is not currently aware of any issues in this update.
How to get this update
Install this update
| Release Channel | Available | Next Step |
|---|---|---|
| Windows Update and Microsoft Update | No | See note |
| Windows Update for Business | No | See note |
| Microsoft Update Catalog | No | See note |
| Windows Server Update Services (WSUS) | No | See note |
Note: This update is no longer available. At this time, no functional issues have been reported with this update. To ensure your device continues to receive the latest security updates and quality improvements, we recommend installing the most recent cumulative update.
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 4.8.1 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
- Help for installing updates: Windows Update FAQ
- Protect yourself online and at home: Windows Security support
- Local support according to your country: International Support