Today, we are releasing the January 2021 Security and Quality Rollup Updates for .NET Framework.
Security
The January Security and Quality Rollup Update does not contain any new security fixes. See October 2020 Security and Quality Rollup for the latest security updates.
Quality and Reliability
This release contains the following quality and reliability improvements.
CLR1
- Improved the clean-up process for X509Certificate2 certificates
WPF2
- Addressed an issue with a FailFast crash arising in apps with two threads that both load application resources.
1 Common Language Runtime (CLR) 2 Windows Presentation Foundation (WPF)
Getting the Update
The Security and Quality Rollup is available via Windows Update, 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 | |
|---|---|---|
| Windows 10, version 20H2 and Windows Server, version 20H2 | ||
| .NET Framework 3.5, 4.8 | Catalog | 4586876 |
| Windows 10 2004 and Windows Server, version 2004 | ||
| .NET Framework 3.5, 4.8 | Catalog | 4586876 |
| Windows 10 1909 and Windows Server, version 1909 | ||
| .NET Framework 3.5, 4.8 | Catalog | 4586878 |
| Windows 10 1903 and Windows Server, version 1903 | ||
| .NET Framework 3.5, 4.8 | Catalog | 4586878 |
| Windows 10 1809 (October 2018 Update) and Windows Server 2019 | 4598499 | |
| .NET Framework 3.5, 4.7.2 | Catalog | 4586875 |
| .NET Framework 3.5, 4.8 | Catalog | 4586877 |
| Windows 10 1803 (April 2018 Update) | ||
| .NET Framework 3.5, 4.7.2 | Catalog | 4598245 |
| .NET Framework 4.8 | Catalog | 4597249 |
| Windows 10 1709 (Fall Creators Update) | ||
| .NET Framework 3.5, 4.7.1, 4.7.2 | Catalog | 4598234 |
| .NET Framework 4.8 | Catalog | 4597248 |
| 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 | 4598243 |
| .NET Framework 4.8 | Catalog | 4597247 |
| Windows 10 1507 | ||
| .NET Framework 3.5, 4.6, 4.6.1, 4.6.2 | Catalog | 4598231 |
| Azure Stack HCI, version 20H2 | ||
| .NET Framework 4.7.2 | Catalog | 4586874 |
The following table is for earlier Windows and Windows Server versions.
| Product Version | Security and Quality Rollup | |
|---|---|---|
| Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2 | 4598502 | |
| .NET Framework 4.5.2 | Catalog | 4578956 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 4597238 |
| .NET Framework 4.8 | Catalog | 4597253 |
| .NET Framework 4.8 | Catalog | 4486105 |
| Windows Server 2012 | 4598501 | |
| .NET Framework 4.5.2 | Catalog | 4578954 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 4597237 |
| .NET Framework 4.8 | Catalog | 4597252 |
| .NET Framework 4.8 | Catalog | 4486081 |
| Windows 7 SP1 and Windows Server 2008 R2 SP1 | 4598500 | |
| .NET Framework 4.5.2 | Catalog | 4578955 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 4597239 |
| .NET Framework 4.8 | Catalog | 4597254 |
| .NET Framework 4.8 | Catalog | |
| Windows Server 2008 | 4598503 | |
| .NET Framework 4.5.2 | Catalog | 4578955 |
| .NET Framework 4.6 | Catalog | 4597239 |
Previous Monthly Rollups
The last few .NET Framework Monthly updates are listed below for your convenience:
- .NET Framework November 2020 Cumulative Update Preview for Windows 10 2004 and Windows Server, version 2004
- .NET Framework November 2020 Cumulative Update Preview
- .NET Framework November 2020 Security and Quality Rollup Updates
The post .NET Framework January Security and Quality Rollup Update appeared first on .NET Blog.
source https://devblogs.microsoft.com/dotnet/net-framework-january-security-and-quality-rollup-update/
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