Office 365 - What version of Microsoft Outlook am I using?

This document describes how you can determine the version that you have installed on your computer. These instructions assume you already have an Outlook profile/account configured. If you do not have Outlook configured, you can substitute Outlook with any of the other Office applications in the steps below.

Select your operating system:


Windows OS

Outlook 2016/13

  1. Start Outlook.
  2. On the File menu, click Office Account.
  3. Under Product Information, you'll see the general version of Outlook installed on your computer.
    Office Product Information
    This version was downloaded/installed from your Office 365 subscription - you must have
    an active Office 365 ProPlus license/subscription to run this version.
    Office Product Information
    This version was downloaded/installed from Campus Software Library (CSL).
  4. For complete version, click About Outlook. A new window will appear. The top will display the build information and if the client is 32- or 64-bit.

    detailed version

  5. Click left arrow to return to Outlook.

Mac OS

Outlook 2016/2011

Important: Beginning September 22, 2016, Office for Mac 2011 will no longer be available for installation from the Office 365. Please see the following document for further details: Office 365 - Microsoft Office 2011 path to retirement.

  1. Start Outlook.
  2. From the Outlook menu, select About Outlook.
  3. You will be presented with the 'about' screen:

    If you are running Outlook 2016 for Mac

    Outlook_Mac_OWA.png
    This version was downloaded/installed from your Office 365
    subscription - you must have an active Office 365 ProPlus
    license/subscription to run this version.
    Outlook_Mac_CSL.png
    This version was downloaded/installed from Campus Software
    Library (CSL). You will not see license or device id information.

    If you are running Outlook 2011

    o2011_about

  4. Click red X to return to Outlook.

Outlook on the web - browser

The Outlook on the web version can be found by looking at the source data.

  1. Log into Outlook on the web.
  2. Select the account you want to log into.
  3. Right-click in any space within your screen and select "View Page Source" or "View source" from the menu that appears.
  4. In the top section, you will see a line similar to:

    <meta name="msapplication-TileImage" content="prem/16.817.13.1742256/resources/images/0/owa_browserpinnedtile.png"/>

    In the example above, the Outlook on the web version is 16.817.13.1742256.
  5. Click the "X" located in the top right corner of this box to close this window.

See Also:




Keywords:microsoft office365 o365 2010 2015 2016 2013 2011 for mac windows version use how to tell client about information web app owa browser firefox internet explorer ff ie chrome mozilla google   Doc ID:45506
Owner:Ara M.Group:Office 365
Created:2014-12-08 16:30 CSTUpdated:2016-10-03 12:57 CST
Sites:DoIT Help Desk, DoIT Tech Store, Office 365
Feedback:  4   2