This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Security Bulletin MS16-042. Microsoft Office 2016 for Mac includes versions of Word, Excel, PowerPoint, OneNote, and Outlook that are designed for the Mac and yet are unmistakably Office. The April 12, 2016, update provides fixes for issues in the Office 2016 for Mac Suite that affect Word, Excel, PowerPoint, and OneNote.


For a complete list of affected versions of Microsoft Office software, see KB3148775.

Improvements and fixes

This update provides the following fixes and improvements.

  • Word

    • The Add-ins Store, where you can browse for tools that can increase your productivity in Word and enhance your documents

  • Excel

    • The Add-ins Store, where you can browse for tools that can increase your productivity in Excel and enhance your spreadsheets

  • Microsoft Auto Update for Mac version 3.4.0

    • Improved performance and support for alternative versioning schemes

How to obtain and install the update

Method 1: Microsoft AutoUpdate for Mac

This update is available from Microsoft AutoUpdate. AutoUpdate is provided together with Office. It automatically keeps Microsoft software up-to-date. To use AutoUpdate, start a Microsoft Office program, and then click Check for Updates on the Help menu.

Method 2: Microsoft Download Center

This update is available for download and installation from the Microsoft Download Center:

More Information

Security update deployment information

For deployment information about this update, see Microsoft Knowledge Base article 3148775.

Update replacement information

This security update replaces security update 3138327.

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Local support according to your country: International Support

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