.NET Framework February 2024 Security and Quality Rollup Updates
Yesterday, we released the February 2024 Security and Quality Rollup Updates for .NET Framework.
Security
The February Security and Quality Rollup Update does not contain any new security fixes. See January 2024 Security and Quality Rollup for the latest security updates.
Quality and Reliability
This release contains the following quality and reliability improvements.
ASP.NET
- Addresses an issue with “System.ArgumentException: Illegal characters in path” in some ASP.Net MVC requests.
.NET Libraries
- Addresses an issue where version of the OSS zlib library is out of date.
Getting the Update
The Security and Quality Rollup is available via Windows Update, Windows Server Update Services, and Microsoft Update Catalog. The Security Only Update is available via Windows Server Update Services and Microsoft Update Catalog.
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.
| Product Version | Cumulative Update | |
|---|---|---|
| Microsoft server operating system, version 23H2 | ||
| .NET Framework 3.5, 4.8.1 | Catalog | 5034626 |
| Windows 11, version 22H2 and Windows 11, version 23H2 | ||
| .NET Framework 3.5, 4.8.1 | Catalog | 5034467 |
| Windows 11, version 21H2 | 5034686 | |
| .NET Framework 3.5, 4.8 | Catalog | 5034625 |
| .NET Framework 3.5, 4.8.1 | Catalog | 5034612 |
| Microsoft server operating system, version 22H2 | 5034923 | |
| .NET Framework 3.5, 4.8 | Catalog | 5034613 |
| .NET Framework 3.5, 4.8.1 | Catalog | 5034611 |
| Microsoft server operating system version 21H2 | 5034682 | |
| .NET Framework 3.5, 4.8 | Catalog | 5034613 |
| .NET Framework 3.5, 4.8.1 | Catalog | 5034611 |
| Windows 10, version 22H2 | 5034685 | |
| .NET Framework 3.5, 4.8 | Catalog | 5034468 |
| .NET Framework 3.5, 4.8.1 | Catalog | 5034466 |
| Windows 10, version 21H2 | 5034684 | |
| .NET Framework 3.5, 4.8 | Catalog | 5034468 |
| .NET Framework 3.5, 4.8.1 | Catalog | 5034466 |
| Windows 10 1809 (October 2018 Update) and Windows Server 2019 | 5034683 | |
| .NET Framework 3.5, 4.7.2 | Catalog | 5034619 |
| .NET Framework 3.5, 4.8 | Catalog | 5034624 |
| Windows 10 1607 (Anniversary Update) and Windows Server 2016 | ||
| .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 5034767 |
| .NET Framework 4.8 | Catalog | 5034614 |
The following table is for earlier Windows and Windows Server versions.
| Product Version | Security and Quality Rollup | |
|---|---|---|
| Windows Server 2008 | 5034690 | |
| .NET Framework 2.0, 3.0 | Catalog | 5033898 |
| .NET Framework 3.5 | Catalog | 5034008 |
| .NET Framework 4.6.2 | Catalog | 5034620 |
| Windows Server 2008 R2 | 5034687 | |
| .NET Framework 3.5.1 | Catalog | 5033899 |
| .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 5034620 |
| .NET Framework 4.8 | Catalog | 5034615 |
| Windows Server 2012 R2 | 5034689 | |
| .NET Framework 3.5 | Catalog | 5033900 |
| .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 5034622 |
| .NET Framework 4.8 | Catalog | 5034617 |
| Windows Server 2012 | 5034688 | |
| .NET Framework 3.5 | Catalog | 5033897 |
| .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 5034621 |
| .NET Framework 4.8 | Catalog | 5034616 |
The operating system row lists a KB which will be used for update offering purposes. When the operating system KB is offered, the applicability logic will determine the specific .NET Framework update(s) will be installed. Updates for individual .NET Framework versions will be installed based on the version of .NET Framework that is already present on the device. Because of this the operating system KB is not expected to be listed as installed updates on the device. The expected update to be installed are the .NET Framework specific version updates listed in the table above.
Previous Monthly Rollups
The last few .NET Framework Monthly updates are listed below for your convenience:
- .NET Framework January 2024 Cumulative Update Preview
- .NET Framework January 2024 Security and Quality Rollup
- .NET Framework November 2023 Security and Quality Rollup
- .NET Framework October 2023 Cumulative Update Preview
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