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ITS now provides students, staff and faculty with two-factor authentication through Duo, adding an extra layer of protection for Pomona logins. Duo, a leader in two-factor authentication services, was selected by Pomona College for its security, dependability, and user-friendly approach.

Duo adds a second layer of security when accessing Pomona resources by verifying your login with a second method such as a text, phone call or push notification on your mobile device. Learn more about the basics of Duo.


Activate Your Account

Getting started with Duo is easy and takes less than five minutes. Simply login to the Duo Self-Service page with your Pomona credentials, select the “Start Setup,” and follow the instructions to connect your device. We recommend setting up your smartphone using the Duo App (instructions below) and your desk phone (click +Add another device, then follow the instructions). This gives you a backup in case you forget your cell phone.


Duo Apps

Duo's self-enrollment process makes it easy to register your phone or tablet and activate the Duo Mobile app so you can receive Duo requests via push notification and tap to approve and login. To setup your device, download the Apple or Android app and follow these simple instructions.


Getting Started

Once you've enrolled in Duo, you're ready to go. To test Duo, point your browser to any service that is behind CAS (Central Authentication Service). These include Sakai, Kronos, The Portal, Workday etc. Login to your account with your Pomona College credentials, check the box next to “Remember me for 30 days and use your device to verify that it's you.


Data Security

As a Pomona College community member, you may have access to confidential and sensitive information about students, the college, and even yourself. Verifying your identity with a secondary device makes it difficult for someone to gain access to your account. Passwords are increasingly easy to compromise. They can often be stolen, guessed, or hacked — you might not even know someone is accessing your account. Two-factor authentication adds a second layer of security, keeping your account secure even if your password is compromised. With Duo Push, you'll be alerted right away (on your phone) if someone is trying to log in as you. This second factor of authentication is separate and independent from your username and password — Duo never sees your password.



How do I reactivate Duo?

If you get a new phone, you'll need to re-activate Duo Mobile. You may enroll your new device yourself using the Duo Self-Service. Visit Duo’s User Guide to find activation instructions for each platform.

Why am I no longer receiving push notifications on Duo mobile?

You may have trouble receiving push requests if there are network issues between your phone and our service. Many phones have trouble determining whether to use the WiFi or cellular data channel when checking for push requests, and simply turning the phone to airplane mode and back to normal operating mode again often resolves these sorts of issues, if there is a reliable internet connection available. Similarly, the issue may be resolved by turning off the WiFi connection on your device and using the cellular data connection.

iOS users can run a troubleshooting tool from within Duo Mobile version 3.32.0 or later. To run the tool:

1.Open the Duo Mobile app on your iOS device and tap the Edit button in the top left of the accounts list screen, then tap the name of the account for you aren't receiving push requests.

2.Next, tap the Get Started button in the "Missing Notifications?" section of the the "Account Details" screen.

3.Duo Mobile performs the test. If any step fails, you'll receive further troubleshooting suggestions. After taking the suggested actions, tap **Run test again* to retry.

The steps that Push Troubleshooting performs automatically are as follows:

  • Check device settings.
  • Check internet connectivity.
  • Check that the device can contact Duo's cloud service.
  • Attempts to send a test Duo Push notification.

Should none of these actions help, see the Duo Knowledge Base for additional iOS and Android troubleshooting steps.

If you've tried the suggestions here but can't get Duo Push working or reactivate your device yourself, please contact ITS Service Desk at or (909) 621-8061 to request reactivation of Duo Mobile.

What do I do if I lost my phone?

If you had previously enrolled a second authentication device on the Duo Self-Service page you can use My Settings & Devices to delete your lost or stolen phone. If you did not setup a second device, ITS Service Desk can disable the missing phone for authentication and help you log in using another method. While it's important to contact ITS if you lose your phone, remember that your password will still protect your account.

I am running iOS 10 and I am not able to install the current version of Duo Mobile on my device.

The minimum supported operating system version for Duo Mobile 3.29.0 and above is iOS 11. iOS 10 users may download the last Duo Mobile version compatible with that iOS version (3.28.1) via Apple's TestFlight program:

1.Install the Apple TestFlight application on your device.

2.Once you have TestFlight installed, tap this link and then tap Install to install Duo Mobile 3.28.1 on your iOS 10 device.

Contact ITS Service Desk at or (909) 621-8061 if further assistance is required.

I am using Microsoft Internet Explorer and the Duo Prompt does not display correctly.

For the best results we do not recommend using Internet Explorer's Compatibility View with Duo authentication. You may, however, be able to turn off Compatibility View yourself.

From the Address bar: If the Compatibility View button displays in the Address bar to the right of the page address, you can click the button to exit Compatibility mode.

From the Internet Explorer Tools Menu: In the Internet Explorer browser window press the Alt key to display the menu bar. Navigate to “Tools” → “Compatibility View” settings and make one or more of the following changes:

  • Remove the website where you use Duo authentication from the "Websites you've added to Compatibility View"
  • Uncheck the "Display all websites in Compatibility View" option if present and enabled.
  • Uncheck the "Display intranet sites in Compatibility View" option.

Click the Close button to save your change. Contact ITS Service Desk at or (909) 621-8061 if the Duo Prompt continues to display incorrectly.



The Pomona College ITS Service Desk is open Monday through Friday from 8 a.m. to 5 p.m. to help with setup or to answer any questions you may have on Duo. In addition, we recommend reviewing the Duo User Guide, which offers a complete overview of Duo, installation instructions, and answers many frequently asked questions. For help with issues that are not answered in the Knowledge Base, please contact the ITS Service Desk at or (909) 621-8061.