April 25, 2023
.NET Framework 3.5 and 4.8
The April 25, 2023 update for Windows 11, version 21H2 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
- Addresses an issue where using IsReadOnly property of TextBox and RichTextBox in ControlTemplate.Triggers throws an exception.
- Addresses an issue to restore Images and other glyphs not displaying correctly in XPS documents after customers install the December 13th, 2022 security update or the January 19th, 2023 update
- Addresses an issue with Null reference exceptions occurring when loading XPS documents after customers install the December 13th, 2022 security update or the January 19th, 2023 update.
1 Windows Presentation Foundation (WPF)
Note: This update includes the resolution to a known issues discussed in KB5022083 . If you used any workaround or mitigations for this issue, they are no longer needed, and we recommend you remove them. To remove a workaround, review the Workaround or Alternate Workaround instructions as outlined in the KB5022083.
Additional information about this update
The following articles contain additional information about this update as it relates to individual product versions.
5025368 Description of the Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2 (KB5025368)
Known issues in this update
Microsoft is not currently aware of any issues in this update.
How to get this update
Install this update
Windows Update and Microsoft Update
None. This update will be downloaded and installed automatically from Windows Update.
Windows Update for Business
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
To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)
You can import this update into WSUS manually via 5025368. 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 .
To apply this update, you must have .NET Framework 3.5 or 4.8 installed.
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.