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With so many Outlook apps and services, it can be confusing to know which version you're using. To find out, choose how you access Outlook:

To determine if the Outlook for Windows version you're using is new Outlook or classic Outlook, check if there's a File option on the ribbon. If File doesn't appear, you're using new Outlook. If you do have a File option, you're using classic Outlook.

Icon for new Outlook You're using new Outlook if the icon in the task bar includes the words NEW, and your tab options on the ribbon are Home, View, and Help.

Screenshot of new Outlook ribbon

Icon for classic Outlook You're using classic Outlook if the app icon in the task bar doesn't contain the words NEW, and File appears on the ribbon.

Screenshot of classic Outlook ribbon which includes File in the tab options.

For more specific version information, follow the steps in the new Outlook or the classic Outlook section below.

Check which version of new Outlook you're running

To check what version number of Outlook you're running:

  1. Select  Settings.

  2. Choose General, then About Outlook. The version information will be on the right.

Image of new Outlook for Windows version information with 'General' and 'About Outlook' highlighted.

Check which version of classic Outlook you're running

  1. In Outlook, choose File.

    This is what the ribbon looks like in Outlook 2016.

  2. Select Office Account.

    If you don't see Office Account, option, choose Help. You'll see the product version on the right side of the page.

  3. You'll find your version and build number under Product Information. For example, yours may list Microsoft 365 Apps for enterprise, and you can see which apps it contains by their icons.

  4. If you need to know whether you're using the 32-bit version or the 64-bit version of Outlook, select About Outlook.

    Choose the About Outlook box.

  5. The top of the About Outlook box shows the version number and 32-bit or 64-bit distinction.

    Screenshot showing the name of the product, the version you're running, and if it's 32 or 64 bit.

Some Outlook features are only available as part of Outlook for Microsoft 365 or the Office Insider program.

Select File > Office Account. If you see Microsoft 365 or Office Insider, you're running Outlook for Microsoft 365 Current Channel or an Insider build.

See File > Office Account to find your Outlook version.

If you’re using Windows 10 or Windows 11, and your Outlook doesn’t match the images here, there are two possible reasons.

  1. You’re using an older, unsupported version of Outlook, such as Outlook 2003. You can often find the Outlook product version by selecting Help > About.

  2. You’re using Windows 10 or Windows 11 Mail. Windows 10 or Windows 11 Mail is a free program included with all Windows 10 or older Windows 11 computers. If you’re using Windows 10 Mail, your Inbox will look something like this.

    What the ribbon looks like when you have the Mail app for Windows 10.

    Important: Changes are coming to these versions of Outlook. Learn more in Outlook for Windows: The Future of Mail, Calendar, and People on Windows 11.

To learn more about Windows 10 Mail, see Windows 10 Mail and Calendar FAQ.

See also

Getting started with the new Outlook for Windows

Follow these steps to find out what version of Outlook is installed on your Mac.

  1. Open Outlook.

  2. On your menu bar, choose Outlook (next to the Apple logo). If you don't see your menu bar, move your mouse to the top of your screen and it will appear.

    To see what version of Outlook you have, choose Outlook on your menu bar.
  3. Choose About Outlook. The version information appears.

    If you have Outlook through your Microsoft 365 subscription, it won't display 2016 or 2011.

    If you have Outlook through Office 365, About Outlook will say Office 365 subscription.

    Here's what it looks like if you have Outlook for Mac 2011:

    The About Outlook box will say Outlook for Mac 2011.

See also

Import email messages, contacts, and other items into Outlook 2016 for Mac

Export items to an archive file in Outlook for Mac

To access online versions of Outlook, first connect to the Internet. Then sign in with your Microsoft account, or work or school account.

Outlook.com / Hotmail.com

Outlook.com / Hotmail.com is a free, web-based email service from Microsoft. Because Outlook.com is a service that you access over the Internet, it is not installed on your computer, and doesn't have version information.

You sign into this web version of Outlook with a personal Microsoft account (such as an Outlook.com, Hotmail.com, Live.com, or MSN.com account).

A screenshot of the new Mail experience

Outlook on the web for Microsoft 365 for business

What the ribbon looks like in Outlook on the web.

or

A screenshot of the new Mail experience

If you have Microsoft 365 for business subscription, your plan includes access to a version of Outlook that you can access anywhere there's an Internet connection. You sign in to this version of Outlook using your work or school account.

Outlook on the web is especially useful if you have email accounts with multiple services, because you can manage all your email from one place.

You cannot use Outlook on the web to import or export your contacts and email. To import or export your contacts, you must use the Outlook app, either version 2016, 2013, 2010, or 2007. After the Outlook app is installed on your computer, here's what you do:

  1. Add your email address to the Outlook app. It will sync with your email service and your email and contacts will appear.

  2. Choose from the instructions listed here: Import and export Outlook email, contacts, and calendar.

Outlook Web App (for Exchange 2010 or 2016)

Outlook Web App is used only in work or school environments that are hosting their own Exchange Server.

To get to your contacts, from the app launcher Office 365 app launcher icon click People.

To import or export your contacts, you must use the Outlook app, either version 2016, 2013, 2010, or 2007. After the Outlook app is installed on your computer, here's what you do:

  1. Add your email address to the Outlook app. It will sync with your email service and your email and contacts will appear.

  2. Choose from the instructions listed here: Import and export Outlook email, contacts, and calendar.

What the ribbon looks like in Outlook Web App

Outlook for iOS

If you have an iPhone or iPad, you're using Outlook for iOS to manage your email, calendar, contacts, and files. You can add any email account that uses POP or IMAP, as well as Outlook.com, Microsoft 365, Gmail, Yahoo, and Exchange accounts.

To find the version number of Outlook for iOS on your iPhone:

  1. In Outlook on your iPhone, select Settings > Help & Feedback.

  2. Scroll to the bottom of the page. The version number appears there.

Here's some information for Outlook for iOS:

A picture of what Outlook looks like on an iPhone.

Outlook for Android

If you have an Android phone or tablet, the Outlook product you're using is Outlook for Android. The app allows you to manage your email, calendar, contacts, and files. You can add any email account that uses POP or IMAP, as well as Outlook.com, Microsoft 365, Gmail, Yahoo, and Exchange accounts. Here's some information for this version of Outlook:

A picture of what Outlook looks like on an iPhone.

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