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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 MS16-054. 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 May 10, 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 KB3155544.

Improvements and fixes

This update provides the following fixes and improvements.

  • Outlook

    • Outlook now fully supports Arabic and Hebrew, including right-to-left layout and editing.

    • Select from more fonts and colors, more styles for bulleted and numbered lists, and better hyperlinks. Use Autocorrect. Resize and format pictures while composing.

  • PowerPoint

    • You can now save your PowerPoint deck as a PDF by using the Save As command.

    • If a slide contains a video that has closed captions or multiple audio tracks, you can now play these tracks in your slideshow.

  • Microsoft Auto Update for Mac version 3.5.0

    • Fixes an issue that causes the app to crash after downloading updates.

    • Adds support for Slow and Fast levels for the Office Insider program. Both levels provide earlier access to Office 2016 for Mac with the Fast level getting more frequent updates.

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 3155544.

Update replacement information

This security update replaces security update 3142577.

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Local support according to your country: International Support

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