This article can be found online at:  https://guide.duo.com/prompt

 

Using the Authentication Prompt

The authentication prompt lets you choose how to verify your identity each time you log in.

Supported Browsers: Chrome, Firefox, Safari, and Internet Explorer 8 or later.

If you have more than one device enrolled you'll see a device selector.

Select the device you want to use and then choose your authentication method.

Method	Description
Duo Push	Pushes a login request to your phone or tablet (if you have Duo Mobile installed and activated on your iPhone, Android, or BlackBerry device). Just review the request and tap Approve to log in.
Call Me	Authenticate via phone callback.
Enter a Passcode	Log in using a passcode, either generated with Duo Mobile, sent via SMS, generated by your hardware token, or provided by an administrator. Click Send codes to get a new batch of passcodes texted to your phone.

You can also use U2F Tokens for authentication.

If you can't authenticate or aren't sure what to do, click Need help? on the left side of the Duo prompt. Your administrator may have customized the help text with additional instructions or contact information.

Self-service Options

If your organization has enabled self-service you can add an additional authentication device by clicking the Add a new device link, or update your setting and remove authentication methods by clicking My Settings & Devices.

Trusted Devices

You'll also see a Remember me for... option if your administrator enabled Duo's trusted devices feature. If you check this box when authenticating you won't need to perform Duo second-factor authentication again for the duration specified on the prompt.

Authenticating from Smaller Screens

If you're logging in with Duo from a device with a smaller screen (like a tablet) or small browser window then your authentication prompt may look slightly different. Don't worry! All the devices and options shown in the full-size prompt are available for use, and you can enroll and manage devices by following the same steps.

 

Access Add a New Device or My Settings & Devices by clicking the Settings button at the top. Click the X on the Settings button to return to the authentication prompt.

Software Updates

You may be prompted to update outdated browser or plugin software when authenticating if your organization enabled this feature. You can take a few minutes to update your web browser, Flash, or Java version to the most recent before authenticating, or choose to update later and continue on to the protected resource.

If your organization blocks access to Duo-protected resources from devices with outdated browsers or plugins, then you may not complete two-factor authentication until you update your software.

 

Learn more about software updates.

 

Your administrator may also choose to block access from certain computer and mobile operating systems. In this case, you must upgrade your OS to an allowed version or switch to a different device.