Microsoft March 2020 Security Updates


Release Notes
March 2020 Security Updates

Release Date: March 10, 2020

The March 2020 security release consists of security updates for the following software:

  • Microsoft Windows
  • Microsoft Edge (EdgeHTML-based)
  • Microsoft Edge (Chromium-based)
  • ChakraCore
  • Internet Explorer
  • Microsoft Exchange Server
  • Microsoft Office and Microsoft Office Services and Web Apps
  • Azure DevOps
  • Windows Defender
  • Visual Studio
  • Open Source Software
  • Azure
  • Microsoft Dynamics
Please note the following information regarding the security updates:

  • A list of the latest servicing stack updates for each operating system can be found in ADV990001. This list will be updated whenever a new servicing stack update is released. It is important to install the latest servicing stack update.
  • Windows 10 updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows 10, in addition to non-security updates. The updates are available via the Microsoft Update Catalog.
  • Updates for Windows RT 8.1 and Microsoft Office RT software are only available via Windows Update.
  • For information on lifecycle and support dates for Windows 10 operating systems, please see Windows Lifecycle Facts Sheet.
  • In addition to security changes for the vulnerabilities, updates include defense-in-depth updates to help improve security-related features.
  • Customers running Windows 7, Windows Server 2008 R2, or Windows Server 2008 need to purchase the Extended Security Update to continue receiving security updates. See 4522133 for more information.
The following CVEs have additional information and may include * further steps to take after installing the updates. Please note that this is not a complete list of CVEs for this release.

Known Issues

The following KBs contain information about known issues with the security updates. For a complete list of security update KBs, please see 20200310

KB Article Applies To
4538032 Visual Studio
4538461 Windows 10 Version 1809, Windows Server 2019
4540123 Microsoft Exchange Server
4540670 Windows 10, version 1607, Windows Server 2016
4540671 Internet Explorer
4540673 Windows 10, version 1809, Windows Server version 1809, Windows 10, version 1809, Windows Server version 1809
4540688 Windows 7, Windows Server 2008 R2 (Monthly Rollup)
4540694 Windows Server 2012 (Security-only update)
4541500 Windows 7, Windows Server 2008 R2 (Security-only update)
4541504 Windows Server 2008 (Security-only update)
4541505 Windows 8.1, Windows Server 2012 R2 (Security-only update)
4541506 Windows Server 2008 Service Pack 2 (Monthly Rollup)
4541509 Windows 8.1, Windows Server 2012 R2 (Monthly Rollup)
4541510 Windows Server 2012 (Monthly Rollup)


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