To set up Duo:

  1. Log into using your MyCarletonOne credentials.
  2. Click Start Setup.
  3. Select the device you will be adding (mobile phone, tablet, or landline).
  4. Follow the steps provided.

To Add Another Device:

We recommend you configure more than once device in case that primary device is not accessible.

  1. Login to using your MyCarletonOne credentials.
  2. Choose authentication method by clicking on one of the green buttons (Call Me, Enter a Passcode).
  3. Complete the Duo authentication to confirm it’s you.
  4. The “Add another device” option is now available, click and follow the prompts to add a new device.

Getting Prompted for your Exchange Password?

There have been some cases where, after Duo is enabled, an individual’s iPhone or iPad re-prompts  for the Exchange password.

Should this occur you must delete and re-add your Exchange account, as shown below.

To delete your iPhone’s mail app account for Carleton Exchange:

Tap: Settings > Accounts & Passwords > [Select your Exchange account] > Delete Account

To re-add your Carleton Exchange account to your iPhone’s mail app:

  1. Tap: Settings > Accounts & Passwords > Add Account > Exchange
  2. Enter your full Exchange address (no periods): e.g.
    You’ll be presented with Carleton’s on-premise authentication page,, where you can enter your full Exchange address again and your MyCarletonOne password.
  3. Validate with Duo.
  4. Select your desired Exchange attributes.

Need Help?

The ITS Service Desk is here to help!  If you encounter any issues, please call 520-3700 or email