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Thanks to technology, your personal and financial information are accessible to you from anywhere that the internet is available. This is convenient, but it also comes with risk. If all you need to access your account is “hello123,” then it will be easy for anyone else with an interest in your…
If you're not already using Duo Mobile for Two-Step Login, it's easy to set up for secure, convenient access wherever you are. Make your Two-Step Login experience simple and seamless with Duo Push, supported by the Duo Mobile app. Quickly verify your login by approving push notifications on your…
Go to the Device Management Portal
To add a new device to Two-Step Login, begin one of two ways. Either:
Go to the Device Management portal using one of the following methods. Either:
When you have a new smartphone, there are a few steps you need to take to setup the phone you're using for your Two-Step Login account. What you do with your account depends on whether or not you kept your phone number or if you have a new number on your new smartphone.
Go to the Device Management Portal
To add a new device to Two-Step Login, begin one of two ways. Either:
Go to the Device Management portal using one of the following methods. Either:
Go to the Device Management PortalGo to the Device Management portal using one of the following methods:
Use Append Mode Authentication
Some campus IT services, such as Desktop Everywhere using the VMware Horizon View client, do not support a web interface to specify how to complete the second step of authentication.
If you enter just your NetID and password with these non-web apps, Two-Step…
Get a Passcode from a Hardware TokenAcquire and enroll a hardware token that will display a passcode with a simple button push.
During Fall 2025, Cornell is retiring the Duo Phone Call and
Why Two-Step Login?
NetID passwords belonging to Cornell community members are stolen, guessed, or hacked daily. Two-Step Login means a thief would also need to have your device in order to do anything with your password.
Typically, by the time a password theft is detected or reported,…
If you don't see the Expand Where You Use Two-Step Login tab described below, then you are required to use Two-Step Login with any service where you log in with CUWebLogin and cannot opt out of this expanded use of Two-Step Login.
Expand Your Use of Two-Step Login
To better protect…
About Hardware Tokens
A hardware token is a keyfob-like device where you press a button to generate a one-time passcode for use in the second step of logging in. Hardware tokens are an option for situations where using a landline, cell phone, or other mobile device with Two-Step Login is not…
During Fall 2025, Cornell is retiring the Duo Phone Call and
To go to the Two-Step Login Device Management Portal, either:
During Fall 2025, Cornell is retiring the Duo Phone Call and
Setting Up a Duo Application
Duo Security supports integration with a broad range of applications and technologies, listed on the top page of their online documentation.
User Experience
If you use the macOS Contacts app, you may not be able to sync your contacts after opting in to Two-Step Login for Office 365.
What to Do
Select System Preferences.
Select iCloud.
Deselect (uncheck) iCloud Keychain.
Select OK.
Microsoft 365 Applications and Mobile AppsBecause Microsoft 365 uses Microsoft Azure authentication, you should rarely need to additionally authenticate with Two-Step Login when launching a Microsoft app on your computer or mobile device.
During Fall 2025, Cornell is retiring the Duo Phone Call and