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Use the instructions below if you can't complete Two-Step Login (Duo) authentication because:
Set Up Touch ID on Your Apple (MacOS or iOS) DeviceFor information about how to set up your Apple device to use Touch ID, visit Apple's documentation, Use Touch ID on Mac
Starting November 4, 2025, Cornell will begin disabling the Duo Phone Call and Duo SMS Passcode methods.
During Fall 2025, Cornell is retiring the Duo Phone Call and
The "Instant Restore" feature is available for Duo accounts used for Cornell Two-Step Login for both iOS and Android devices.
User IssueIf you are required to use Two-Step Login to authenticate your login to a Cornell website or IT services but have not yet enrolled in the service, you will see the following screen:
Google no longer supports the U2F authentication standard in Chrome. This technology was previously used for USB security keys (hardware tokens), such as those used with Cornell Two-Step Login.
To accommodate this change, Duo, the vendor that supports the Two-Step Login service, in January 2022…
This configuration is not officially supported. We recommend that you use a supported email client and method for accessing Cornell email, which is now protected with
How It WorksWhether Two-Step Login has been mandated for your Microsoft 365 account or you are choosing to opt in, Two-Step Login protects access to your email, calendar, and all other Microsoft 365 services.