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Opt In to Two-Step Login for Office 365

How to Opt In to use Two-Step Login with Office 365.

This article applies to: Two-Step Login


Opt In to Two-Step Login for Office 365

Two-Step Login for Office 365 works with:

  • Outlook and other Microsoft Office applications on Windows, macOS, iOS, and Android
  • Apple’s Mail and Calendar apps in macOS 10.14 (Mojave) and later, or iOS 11 and later
  • Outlook on the Web (outlook.cornell.edu)

To find out more about whether this option will work for you, read before you start.

  1. Go to Manage Your Two-Step Login.
  2. Select Use Two-Step Login with Office 365. 
  3. After you have logged in, select Opt In to use with Office 365.
  4. You will be prompted to re-authenticate through CUWebLogin. Enter your NetID and Password, and select Login.
  5. Two-Step Login will prompt you to confirm using a push, phone call, passcode, USB security key, or Mac Touch ID.
You can always return to this tab on Manage Your Two-Step Login to opt out and stop using Two-Step Login with Office 365.
Once you have applied Two-Step Login to Office 365, you will no longer be able to access your Office 365 email account using the IMAP or POP protocols, and SMTP will not work for sending messages. This only applies if you set up Office 365 to use the IMAP or POP protocols.

The only way to access an Exchange Group Account (EGA) on a mobile device will be via Outlook on the Web in a browser.
Previous: Before You Start Using Two-Step Login with Office 365 Next: Test Two-Step Login for Office 365

About this Article

Last updated: 

Thursday, September 5, 2019 - 10:42am

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