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Office 365 and Two-Step Login

Frequently Asked Questions (FAQ) about Two-Step Login for Office 365

This article applies to: Two-Step Login

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How Will Two-Step Login Work with Office 365?

Two-Step Login for Office 365 provides an additional layer of authentication to your email and Office 365 data.

This requirement is independent of opting in to Two-Step Login for all services that use CUWebLogin. If you are subject to mandated use of Two-Step Login with CUWebLogin, that requirement does not necessarily extend to Office 365.

Can I Choose which Office 365 Applications Use Two-Step Login?

No, once you opt in or are required to use it, Two-Step Login will be required for all Office 365 applications.

Which Clients Can I Use with Office 365 and Two-Step Login?

 Two-Step Login for Office 365 works with:

  • Outlook and other Microsoft Office applications on:
    • Windows
    • macOS
    • iOS
    • Android
  • Apple’s Mail and Calendar apps in:
    • MacOS 10.14 (Mojave) and later
    • iOS 11 and later
  • Outlook on the Web (
Some other apps, like Gmail for Android or Thunderbird, may continue to work when carefully configured by an experienced user, but we encourage people to switch to a supported client. For more details, review Before You Start Using Two-Step Login with Office 365.

Can I Use Two-Step Login for Office 365 on the Web Only?

No. Limiting Two-Step Login to Office 365 on the web would allow an attacker to bypass Two-Step Login's extra protection simply by using a desktop or mobile client instead of web access.


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