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Duo Single Sign-On for CyberArk Workforce Identity

Last Updated: April 20th, 2023

Add two-factor authentication and flexible security policies to CyberArk Workforce Identity SAML 2.0 logins with Duo Single-Sign On, our cloud-hosted SSO identity provider, offering inline self-service enrollment and authentication with Duo Universal Prompt.


As business applications move from on-premises to cloud hosted solutions, users experience password fatigue due to disparate logons for different applications. Single sign-on (SSO) technologies seek to unify identities across systems and reduce the number of different credentials a user has to remember or input to gain access to resources.

While SSO is convenient for users, it presents new security challenges. If a user's primary password is compromised, attackers may be able to gain access to multiple resources. In addition, as sensitive information makes its way to cloud-hosted services it is even more important to secure access by implementing two-factor authentication and zero-trust policies.

About Duo Single Sign-On

Duo Single Sign-On is our cloud-hosted SSO product which layers Duo's strong authentication and flexible policy engine on top of CyberArk Workforce Identity logins. Duo Single Sign-On acts as an identity provider (IdP), authenticating your users using existing on-premises Active Directory (AD) or another SSO IdP. Duo SSO prompts users for two-factor authentication and performs endpoint assessment and verification before permitting access to CyberArk Workforce Identity.

Duo Single Sign-On is available in Duo Premier, Duo Advantage, and Duo Essentials plans, which also include the ability to define policies that enforce unique controls for each individual SSO application. For example, you can require that Salesforce users complete two-factor authentication at every login, but only once every seven days when accessing CyberArk Workforce Identity. Duo checks the user, device, and network against an application's policy before allowing access to the application.

Configure Single Sign-On

Before configuring CyberArk Workforce Identity with Duo SSO using Security Assertion Markup Language (SAML) 2.0 authentication you'll first need to enable Duo Single Sign-On for your Duo account and configure a working authentication source.

Once you have your SSO authentication source working, continue to the next step of creating the CyberArk Workforce Identity application in Duo.

Create the CyberArk Workforce Identity Application in Duo

  1. Log on to the Duo Admin Panel and navigate to Applications.

  2. Click Protect an Application and locate the entry for CyberArk Workforce Identity with a protection type of "2FA with SSO hosted by Duo (Single Sign-On)" in the applications list. Click Protect to the far-right to start configuring CyberArk Workforce Identity. See Protecting Applications for more information about protecting applications in Duo and additional application options. You'll need the information on the CyberArk Workforce Identity page under Downloads later.

  3. CyberArk Workforce Identity uses the Mail attribute, Username attribute, and Display name attribute when authenticating. We've mapped the bridge attributes to Duo Single Sign-On supported authentication source attributes as follows:

    Bridge Attribute Active Directory SAML IdP
    <Email Address> mail Email
    <Username> sAMAccountName Username
    <Display Name> displayName DisplayName

    If you are using non-standard attributes for your authentication source, check the Custom attributes box and enter the names of the attributes you wish to use instead.

    Duo CyberArk Workforce Identity Custom Attributes Checkbox
  4. You can adjust additional settings for your new SAML application at this time — like changing the application's name from the default value, enabling self-service, or assigning a group policy.

  5. Keep the Duo Admin Panel tab open. You will come back to it later.

Duo Universal Prompt

The new Universal Prompt provides a simplified and accessible Duo login experience for web-based applications, offering a redesigned visual interface with security and usability enhancements.

Universal Prompt Traditional Prompt
 Duo Push in Universal Prompt  Duo Push in Traditional Prompt

We've already updated the Duo CyberArk Workforce Identity application hosted in Duo's service to support the Universal Prompt, so there's no action required on your part to update the application itself. You can activate the Universal Prompt experience for users of new and existing Duo CyberArk Workforce Identity applications from the Duo Admin Panel.

Before you activate the Universal Prompt for your application, it's a good idea to read the Universal Prompt Update Guide for more information about the update process and the new login experience for users.

Activate Universal Prompt

Activation of the Universal Prompt is a per-application change. Activating it for one application does not change the login experience for your other Duo applications.

The "Universal Prompt" area of the application details page shows that this application is "New Prompt Ready", with these activation control options:

  • Show traditional prompt: (Default) Your users experience Duo's traditional prompt when logging in to this application.
  • Show new Universal Prompt: Your users experience the Universal Prompt when logging in to this application.

Universal Prompt Info - Application Ready for Universal Prompt

Enable the Universal Prompt experience by selecting Show new Universal Prompt, and then scrolling to the bottom of the page to click Save.

Once you activate the Universal Prompt, the application's Universal Prompt status shows "Update Complete" here and on the Universal Prompt Update Progress report.

Universal Prompt Info - Universal Prompt Activation Complete

Should you ever want to roll back to the traditional prompt, you can return to this setting and change it back to Show traditional prompt.

Universal Update Progress

Click the See Update Progress link to view the Universal Prompt Update Progress report. This report shows the update availability and migration progress for all your Duo applications in-scope for Universal Prompt support. You can also activate the new prompt experience for multiple supported applications from the report page instead of visiting the individual details pages for each application.

Enable CyberArk Workforce Identity for SSO

  1. Log into your CyberArk Workforce Identity account.

  2. At the top of the left menu sidebar, click the grid icon next to "Identity User Portal" and then click Admin Portal.

  3. In the left menu sidebar, click Settings and then click Authentication.

  4. Under "Platform", click Security Settings.

  5. Scroll down to the "API Security" section and click Add.

  6. A blank text field opens. Type * into the text field.

  7. Click Add and then click Save.

  8. In the left menu sidebar, click Settings and then click Users.

  9. Under "Sources", click External Identity Providers and then click Add. The "External Identity Providers" window opens.

  10. Enter a unique name into the External Identity Provider Name field.

  11. Under "Federation Domains", click Add. A blank text field opens.

  12. Enter your domain into the blank text field and then click Add.

    Example: If your email addresses are, you would type as the domain name.

    CyberArk Workforce Identity External IdP Settings
  13. In the left menu sidebar of the "External Identity Providers" window, click Inbound Metadata.

  14. Return to the Duo Admin Panel. Copy the IDP Configuration URL and paste it into the CyberArk Workforce Identity Option 1: Upload IDP configuration from URL field.

    Duo CyberArk Workforce Identity IdP Configuration URL
  15. In the left menu sidebar of the "External Identity Providers" window, click Outbound Metadata and then click Option 3: Manual Configuration.

  16. Copy the Service Provider Authentication Response URL and paste it into the Duo Admin Panel Service Provider Authentication Response URL field.

  17. Return to the "External Identity Providers" window. Copy the "Subject" line under "Service Provider Certificate Authority" and paste it into the Duo Admin Panel Service Provider Certificate Authority field.

    CyberArk Workforce Identity SP Certificate Authority Duo CyberArk Workforce Identity Service Provider Fields
  18. Scroll to the bottom of the Duo Admin Panel and click Save.

  19. Return to the "External Identity Providers" window. In the left menu sidebar, click Authentication.

  20. Under the "Map federated user to existing directory user", click Optional from the dropdown menu.

  21. Check the Update cloud users with federated user attributes, Add mapped users to federated groups, and Allow mapping to users in other federations checkboxes.

    CyberArk Workforce Identity External IdP Authentication
  22. Click Save. The status for your added external identity provider is now Active.

Learn more about CyberArk Workforce Identity SSO at CyberArk Identity Online Help.

Using SSO

You can log on to CyberArk Workforce Identity by navigating to your CyberArk Workforce Identity SSO page e.g., Enter your username and click Next to be redirected to Duo Single Sign-On to begin authentication.

Active Directory Login

With Active Directory as the Duo SSO authentication source, enter the primary username (email address) on the Duo SSO login page and click or tap Next.

Duo Single Sign-On Login

Enter the AD primary password and click or tap Log in to continue.

Duo Single Sign-On Password

SAML Login

With another SAML identity provider as the Duo SSO authentication source, Duo SSO immediately redirects the login attempt to that SAML IdP for primary authentication. Users do not see the Duo SSO primary login screen.

Duo Authentication

Successful verification of your primary credentials by Active Directory or a SAML IdP redirects back to Duo. Complete Duo two-factor authentication when prompted and then you'll return to CyberArk Workforce Identity to complete the login process.

Duo Universal Prompt

* Universal Prompt experience shown.

You can also log into CyberArk Workforce Identity using Duo Central, our cloud-hosted portal which allows users to access all of their applications in one spot. Link to CyberArk Workforce Identity in Duo Central by adding it as an application tile. Once the tile has been added, log into Duo Central and click the tile for CyberArk Workforce Identity.

Congratulations! Your CyberArk Workforce Identity users now authenticate using Duo Single Sign-On.

See the full user login experience, including expired password reset (available for Active Directory authentication sources in the Duo End User Guide for SSO.

Enable Remembered Devices

To minimize additional Duo two-factor prompts when switching between CyberArk Workforce Identity and your other Duo Single Sign-On SAML applications, be sure to apply a shared "Remembered Devices" policy to your SAML applications.


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