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The Outlook for Mac for Office 365 - March 2015 Update provides various improvements for Outlook for Mac for Office 365.

More Information

Microsoft has released the latest update to Outlook for Mac for Office 365. This release is available to eligible Office 365 subscribers only.

This update provides the following improvements:

  • Side-by-side calendars

    • You can view up to three calendars side by side in Outlook for Mac. These calendars can be your calendar folders or calendars that are shared with you. When you select an additional calendar in the navigation pane, it is displayed in side-by-side mode instead of the overlay mode. You can use the organize ribbon button or the arrow icon on the tab to move the new calendar or to change the whole view to overlay mode. You can select a calendar by using the tab or the tab header to take additional actions such as creating an appointment or changing the default calendar color.

      Note You must have permission to another user's calendar before you can open it in side-by-side or overlay mode in Outlook for Mac.

  • Offline caching fixed for custom IRM templates.

  • Various bugs and crash scenarios fixed.

  • CPU usage improved.

  • Time zone features and functionality improved.

  • Scrolling and search performance improved.


To apply this update, you must be running OS X Yosemite 10.10 or a later version.

How to obtain the update

  • Office 365 portal

    • Office 365 commercial customers can obtain the new Outlook for Mac through the Office 365 portal. 

      To do this, click the gear icon in the portal, click Office 365 Settings, click Software, and then click the Outlook for Mac icon. Or, go directly to the Software page, and then click the Outlook for Mac icon.

    • Office 365 consumer subscribers can get the new Outlook for Mac on their My Account page.

  • Microsoft Download Center

    The update is also available for download from the Microsoft Download Center.

    Download Download the package for Outlook for Mac

    Release date: March 5, 2015

  • Microsoft AutoUpdate

    The update is also available from Microsoft AutoUpdate. AutoUpdate is a program that automatically keeps Microsoft software up-to-date. To use AutoUpdate, start a Microsoft Office program, and then on the Help menu, click Check for Updates.

For people who already have Office for Mac 2011 and Outlook for Mac 2011 installed on their Mac, see Running Office for Mac 2011 side-by-side with Outlook for Mac for Office 365 for guidance.


Outlook for Mac for Office 365 is available for the following subscriptions:

  • Office 365 Home

  • Office 365 Personal

  • Office 365 University

  • Office 365 Business

  • Office 365 Business Premium

  • Office 365 Enterprise E3

  • Office 365 Enterprise E4

  • Microsoft 365 Apps for enterprise

  • Office 365 Government G3

  • Office 365 Government G4

  • Office 365 Education A3

  • Office 365 Education A4

  • Microsoft 365 Apps for enterprise for Students

  • Microsoft 365 Apps for enterprise A for Students

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

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