Windows

Microsoft Windows Security Updates January 2020 overview (end of Windows 7 support edition)

Welcome to the first Microsoft Patch Day overview of 2020 and the last Patch Day for the company’s Windows 7 operating system (as well as for Windows Server 2008 and Windows Server 2008 R2).

Microsoft released security updates for all supported client and server versions of windows on the January 2020 Patch Tuesday. The company released updates for other products, e.g. Microsoft Office, as well on this day.

The overview starts with an executive summary and the operating system distribution that lists the number of vulnerabilities and the severity rating for each supported version of Windows as well as Microsoft Edge and Internet Explorer.

The list of released updates, non-security updates, security advisories, and known issues follow. You find links to direct downloads for Windows updates as well as resource links at the bottom of the guide.

Click here to open the overview of the December 2019 Windows Security updates.

Microsoft Windows Security Updates January 2020

You may download the following (zipped) Excel spreadsheet that contains a list of released updates in January 2020: windows-security-updates-january-2020

Executive Summary

  • This is the last Patch Day for Windows 7 unless you are a business / Enterprise and subscribed to ESU. Home users may find the “what now” article useful.
  • Microsoft released security updates for all client and server versions of the Windows operating system.
  • Other Microsoft products that received security updates are: Internet Explorer, OneDrive for Android, Microsoft Office, .Net Framework, .Net Core, Asp.net Core, Microsoft Dynamics.

Operating System Distribution

  • Windows 7: 18 vulnerabilities: 1 rated critical and 17 rated important

    • CVE-2020-0611 | Remote Desktop Client Remote Code Execution Vulnerability
  • Windows 8.1: 23 vulnerabilities: 1 rated critical and 22 rated important

    • same as Windows 7
  • Windows 10 version 1803: 29 vulnerabilities: 1 critical and 28 important

    • same as Windows 7
  • Windows 10 version 1809: 29  vulnerabilities: 1 critical and 28 important

    • same as Windows 7
  • Windows 10 version 1903: 29  vulnerabilities: 1 critical and 28 important

    • same as Windows 7
  • Windows 10 version 1909: same as Windows 10 version 1903

Windows Server products

  • Windows Server 2008 R2: 19 vulnerabilities: 1 critical and 12 important.

    • CVE-2020-0611 | Remote Desktop Client Remote Code Execution Vulnerability
  • Windows Server 2012 R2: 26 vulnerabilities: 3 critical and 23 important.

    • CVE-2020-0609 | Windows Remote Desktop Gateway (RD Gateway) Remote Code Execution Vulnerability
    • CVE-2020-0610 | Windows Remote Desktop Gateway (RD Gateway) Remote Code Execution Vulnerability
    • CVE-2020-0611 | Remote Desktop Client Remote Code Execution Vulnerability
  • Windows Server 2016: 31 vulnerabilities: 3 critical and 28 important.

    • same as Windows Server 2012 R2
  • Windows Server 2019: 33  vulnerabilities: 3 critical and 30 are important

    • same as Windows Server 2012 R2

Other Microsoft Products

  • Internet Explorer 11: 1 vulnerability: 1 critical

    • CVE-2020-0640 | Internet Explorer Memory Corruption Vulnerability
  • Microsoft Edge: none
  • Microsoft Edge on Chromium: none

Windows Security Updates

Windows 7 SP1 and Windows Server 2008 R2 SP1

Improvements and fixes:

  • Security updates to the Microsoft Scripting Engine, Windows Input and Composition, Windows Storage and Filesystems, and Windows Server.

Windows 8.1 and Windows Server 2012

Improvements and fixes:

  • Fixes an issue with the new SameSite cookie policies for Google Chrome 80.
  • Security updates to the Microsoft Scripting Engine, Windows Input and Composition, Windows Media, Windows Storage and Filesystems, and Windows Server.

Windows 10 version 1803

Improvements and fixes:

  • Security updates to the Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Input and Composition, Windows Media, Windows Virtualization, Windows Storage and Filesystems, and Windows Server .

Windows 10 version 1809

Improvements and fixes:

  • Fixes an issue with the new SameSite cookie policies for Google Chrome 80.
  • Security updates to Windows App Platform and Frameworks, Windows Input and Composition, Windows Management, Windows Cryptography, Windows Virtualization, the Microsoft Scripting Engine, and Windows Server.

Windows 10 version 1903

Improvements and fixes:

  • Security updates to Windows App Platform and Frameworks, Windows Input and Composition, Windows Management, Windows Cryptography, Windows Storage and Filesystems, the Microsoft Scripting Engine, and Windows Server.

Windows 10 version 1909

Improvements and fixes:

  • Same as Windows 10 version 1903

Other security updates

  • KB4534251 — Cumulative security update for Internet Explorer: January 14, 2020
  • KB4532927 — Security and Quality Rollup for .NET Framework 4.5.2 for Windows 8.1 and Windows Server 2012 R2
  • KB4532928 — Security and Quality Rollup for .NET Framework 4.5.2 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4532929 — Security and Quality Rollup for .NET Framework 4.5.2 for Windows Embedded Standard 7, Windows 7, Windows Server 2008 R2, and Windows Server 2008
  • KB4532930 — Security and Quality Rollup for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4532931 — Security and Quality Rollup for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows 8.1 and Windows Server 2012 R2
  • KB4532932 — Security and Quality Rollup for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Embedded Standard 7, Windows 7, Windows Server 2008 R2, and Windows Server 2008
  • KB4532939 — Security and Quality Rollup for .NET Framework 4.8 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4532940 — Security and Quality Rollup for .NET Framework 4.8 for Windows 8.1 and Windows Server 2012 R2
  • KB4532941 — Security and Quality Rollup for .NET Framework 4.8 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4532944 — Security and Quality Rollup for .NET Framework 2.0, 3.0 for Windows Server 2008
  • KB4532945 — Security and Quality Rollup for .NET Framework 3.5.1 for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
  • KB4532946 — Security and Quality Rollup for .NET Framework 3.5 for Windows 8.1 and Windows Server 2012 R2
  • KB4532950 — Security Only Update for .NET Framework 4.8 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4532934 — Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1703
  • KB4532935 — Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1709
  • KB4532936 — Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1803
  • KB4532937 — Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 1809, and Windows Server 2019
  • KB4532938 — Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2019, Windows 10 Version 1903, and Windows 10 Version 1909
  • KB4532947 — Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10 Version 1809, and Windows Server 2019
  • KB4534271 — Cumulative Update for Windows Server 2016, and Windows 10 Version 1607
  • KB4534276 — Cumulative Update for Windows 10 Version 1709
  • KB4534296 — Cumulative Update for Windows 10 Version 1703
  • KB4534306 — Cumulative Update for Windows 10 Version 1507
  • KB4532933 — Cumulative Update for .NET Framework 4.8 for Windows 10 version 1607 and Windows Server 2016
  • KB4535101 — Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809, and Windows Server 2019
  • KB4535102 — Security and Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and Windows Server 2008 R2 SP1
  • KB4534976 — Security Only Update for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and Windows Server 2008 R2 SP1
  • KB4532951 — Security Only Update for .NET Framework 4.8 for Windows 8.1 and Windows Server 2012 R2
  • KB4536952 — Servicing Stack Update for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
  • KB4532952 — Security Only Update for .NET Framework 4.8 for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
  • KB4532958 — Security Only Update for .NET Framework 3.5 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4532959 — Security Only Update for .NET Framework 2.0 for Windows Server 2008
  • KB4532960 — Security Only Update for .NET Framework 3.5.1 for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
  • KB4532961 — Security Only Update for .NET Framework 3.5 for Windows 8.1 and Windows Server 2012 R2
  • KB4532962 — Security Only Update for .NET Framework 4.5.2 for Windows 8.1 and Windows Server 2012 R2
  • KB4532963 — Security Only Update for .NET Framework 4.5.2 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4532964 — Security Only Update for .NET Framework 4.5.2 for Windows Embedded Standard 7, Windows 7, Windows Server 2008 R2, and Windows Server 2008
  • KB4532969 — Security Only Update for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4532970 — Security Only Update for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows 8.1 and Windows Server 2012 R2
  • KB4532971 — Security Only Update for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Embedded Standard 7, Windows 7, Windows Server 2008 R2, and Windows Server 2008
  • KB4534283 — Security Monthly Quality Rollup for Windows Embedded 8 Standard and Windows Server 2012
  • KB4534288 — Security Only Quality Update for Windows Embedded 8 Standard and Windows Server 2012
  • KB4534303 — Security Monthly Quality Rollup for Windows Server 2008
  • KB4534312 — Security Only Quality Update for Windows Server 2008
  • KB4534976 — Security Only Update for .NET Framework 3.5.1 for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
  • KB4534977 — Security Only Update for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4534978 — Security Only Update for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 8.1 and Windows Server 2012 R2
  • KB4534979 — Security Only Update for .NET Framework 2.0, 3.0, 4.5.2, 4.6 for Windows Server 2008
  • KB4535102 — Security and Quality Rollup for .NET Framework 3.5.1 on Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
  • KB4535103 — Security and Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4535104 — Security and Quality Rollup for .NET Framework 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2
  • KB4535105 — Security and Quality Rollup for .NET Framework 2.0 on Windows Server 2008
  • KB4536953 — Servicing Stack Update for Windows Server 2008
  • KB4528759 — Servicing Stack Update for Windows Server, version 1903, Windows Server, version 1909, Windows 10 Version 1903, and Windows 10 Version 1909
  • KB4528760 — Cumulative Update for Windows Server, version 1903, Windows Server, version 1903, Windows 10 Version 1903, and Windows 10 Version 1909

Here is the master list of all released security updates.

Known Issues

Windows 8.1 and Server 2012 R2

  • Long standing issue: certain rename operations on files or folders on Cluster Shared Volumes may fail.

Windows 10 version 1803

  • Same as Windows 8.1 plus
  • Issue with creating local user accounts during the Out of Box Experience.

Windows 10 version 1809

  • Same as Windows 10 version 1803 plus
  • Devices with certain Asian language packs may throw the error 0x800f0982 – PSFX_E_MATCHING_COMPONENT_NOT_FOUND.

Security advisories and updates

Non-security related updates

  • KB4486081 — Microsoft .NET Framework 4.8 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4486105 — Microsoft .NET Framework 4.8 for Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2
  • KB4486129 — Microsoft .NET Framework 4.8 for Windows 10 Version 1607, Windows 10 Version 1703, and Windows Server 2016
  • KB4486153 — Microsoft .NET Framework 4.8 for Windows 10 Version 1803, Windows 10 Version 1809, Windows 10 Version 1709, Windows Server 2016, and Windows Server 2019
  • KB4492872 — Internet Explorer 11 for Windows Embedded 8 Standard and Windows Server 2012
  • KB4503548 — Microsoft .NET Framework 4.8 for Windows 7 and Windows Server 2008 R2
  • KB4534726 — Dynamic Update for Windows 10 Version 1903, and Windows 10 Version 1909
  • KB890830 — Windows Malicious Software Removal Tool – January 2020

Microsoft Office Updates

You find Office update information here.

How to download and install the January 2020 security updates

The security updates are made available via Windows Update, WSUS, and other updating tools and services. Most home users get the updates automatically via Windows Updates; those who do not want to wait for Windows to pick up the newly released updates can run a manual check for updates to speed up the process.

Note: we recommend that important data is backed up before any updates are installed.

Do this to run a manual check for updates:

  1. Open the Start Menu of the Windows operating system, type Windows Update and select the result.
  2. Select check for updates in the application that opens. Updates may be installed automatically when they are found or offered by Windows; this depends on the operating system and version that is used, and update settings.

Direct update downloads

Windows 7 SP1 and Windows Server 2008 R2 SP

  • KB4534310 — 2020-01 Security Monthly Quality Rollup for Windows 7
  • KB4534314 — 2020-01 Security Only Quality Update for Windows 7

Windows 8.1 and Windows Server 2012 R2

  • KB4534297 — 2020-01 Security Monthly Quality Rollup for Windows 8.1
  • KB4534309 — 2020-01 Security Only Quality Update for Windows 8.1

Windows 10 (version 1803)

  • KB4534293 — 2020-01 Cumulative Update for Windows 10 Version 1809

Windows 10 (version 1809)

  • KB4534273  — 2020-01 Cumulative Update for Windows 10 Version 1809

Windows 10 (version 1903)

  • KB4528760 — 2020-01 Cumulative Update for Windows 10 Version 1903

Windows 10 (version 1909)

  • KB4528760 — 2020-01 Cumulative Update for Windows 10 Version 1909

Additional resources

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