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If you reset your phone to factory settings or replaced it with a new mobile phone but kept the same phone number, you may need to reactivate Duo Mobile.

Step 1 - Authenticate

Expand
titleClick to view step 1

  1. Log in to the My Cal Poly Portal.

  2. Click the Personal Info tab. Under Personal Info, select Authorized Devices. Open the Multi-factor Authentication dropdown. Click Edit.

Cal Poly Portal page with Authorized Devices outlined in red.

  1. Click Other options.

    Other options link highlighted

  2. You’ll be prompted to authenticate now, but do not respond to the prompt. Wait until Step 6 to authenticate instead.

  3. Select Manage devices. This tab is located at the bottom of the list.

    Manage devices menu item selected.

  4. Choose the phone number you wish to reactivate from the dropdown list, then select an authentication method. Complete the verification on your currently enrolled device.

    Devices drop-down list highlighted.

  5. Once authenticated, you will see a page that lists your devices in square cells.

    showing devices in square cells.


Step 2 - Reactivate

Expand
titleClick to view step 2

  1. Click I have a new phone (continued from Step 1 above).

    I have a new phone link highlighted.

  2. Click the Get started button.

    Get Started button highlighted.

  3. Complete the re-enrollment by inputting your information following the instructions in the corresponding prompts. See details in Step 3 below…

Step 3 - Install Duo Mobile App & Add Device

Expand
titleClick to view step 3

  1. Download the Duo Mobile app from the App Store or Google Play on your mobile device. Click Next.

    Duo-enroll-Next.png

  2. On your mobile phone, tap the Add button at the top right of the screen to add an account.

    Mobile Duo App. Account Add button highlighted

  3. Tap Use QR code. You may need to allow access to the camera on your phone. 

    Under Add account, Use QR code button highlighted

  4. Using the Duo app's camera preview screen displayed on your phone, point your phone at the QR code on your computer screen to complete the activation.
    When done successfully, the QR Code will become grayed out with a green check.

    QR code greyed out with green dot check mark over it.

  5. Click Continue to complete the process.

    Continue button highlighted

  6. On your phone, name the account and tap Save. Your account is now linked. Click Practice now to learn how to use Duo and follow the prompts. When asked, tap the blue Allow notifications button to receive notifications, then the Ok button.

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