Microsoft April 2020 Security Updates


Release Notes
April 2020 Security Updates
Release Date: April 14, 2020

The April 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 Office and Microsoft Office Services and Web Apps
  • Windows Defender
  • Visual Studio
  • Microsoft Dynamics
  • Microsoft Apps for Android
  • Microsoft Apps for Mac
Please note the following information regarding the security updates:
  • For information regarding enabling Windows 10, version 1909 features, please see Windows 10, version 1909 delivery options. Note that Windows 10, versions 1903 and 1909 share a common core operating system with an identical set of system files. They will also share the same security update KBs.
  • 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.
  • For information on lifecycle and support dates for Windows 10 operating systems, please see Windows Lifecycle Facts Sheet.
  • 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.
  • Updates for Windows RT 8.1 and Microsoft Office RT software are only available via Windows Update.
  • 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 FAQs with 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 20200414. For more information about Windows Known Issues, please see Windows message center (links to currently-supported versions of Windows are in the left pane).
KB Article Applies To 3128012Microsoft Office 20163162033Microsoft Publisher 20133203462Microsoft Office 20104011097Microsoft Publisher 20164011104Microsoft Office 20134032216Microsoft Publisher 20104462210Microsoft Access 20134462225Microsoft Visio 20104464527Microsoft Access 20104464544Microsoft Visio 20134484117Microsoft Office 20134484125Microsoft Project 20134484126Microsoft Office 20104484132Microsoft Project 20104484167Microsoft Access 20164484214Microsoft Office 20164484226Microsoft PowerPoint 20134484235Microsoft PowerPoint 20104484244Microsoft Visio 20164484246Microsoft PowerPoint 20164484269Microsoft Project 20164484273Microsoft Excel 20164484274Microsoft Outlook 20164484281Microsoft Outlook 20134484283Microsoft Excel 20134484284Microsoft Outlook 20104484285Microsoft Excel 20104484295Microsoft Word 20104484300Microsoft Word 20164484319Microsoft Word 20134549949Windows 10 Version 1809, Windows Server 20194550905Internet Explorer4550917Windows Server 2012 (Monthly Rollup)4550922Windows 10, version 18034550927Windows 10, version 17094550929Windows 10, version 1607, Windows Server 20164550930Windows 104550951Windows Server 2008 Service Pack 2 (Monthly Rollup)4550957Windows Server 2008 Service Pack 2 (Security-only update)4550961Windows 8.1, Windows Server 2012 R2 (Monthly Rollup)4550964Windows 7, Windows Server 2008 R2 (Monthly Rollup)4550965Windows 7, Windows Server 2008 R2 (Security-only update)4550970Windows 8.1, Windows Server 2012 R2 (Security-only update)4550971Windows Server 2012 (Security-only update)

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