How to add a FIDO2/U2F Security Key?

Last updated on September 11, 2026

Rublon MFA supports FIDO2 and FIDO U2F security keys, such as YubiKey, to allow a seamless login experience with top security. Refer to the instructions below to learn how to enroll your FIDO2/U2F security key and use this key to sign in to your applications.

Enroll Your FIDO2/U2F Security Key

Note

To sign in using your FIDO2/U2F Security Key, you must first self-enroll your key using the Manage Authenticators view or ask your administrator to send you an Enrollment Email or Enrollment SMS.

• If you prefer to self-enroll your security key, start from Step 1 of the following guide.
• If you received an Enrollment Email or Enrollment SMS from your administrator, open the email and click Enroll Your Authenticator or open the link in the text message. Then, you can jump to Step 8 of the following guide.

1. Initiate login to your application.

To check if your application integrated with Rublon MFA supports FIDO2/U2F Security Keys, refer to the list of supported applications.

2. Provide your username and password.

3. Rublon Prompt appears.

4. Click Manage Authenticators.

5. To confirm your identity before proceeding, choose one of the available authentication methods.

6. After you confirm your identity with one of the available methods (e.g., Mobile Push), the Rublon Prompt will display the Manage Authenticators view.

7. Click Add Authenticator.