.NET Framework January Security and Quality Rollup Update

Tara Overfield

Tara

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:

1 comment

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    Adriana Solano

    Are there any VM images with .NET Framework 4.8 out of the box? Is there an ETA for it? Thank you