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Multi-Factor Authentication (MFA) | Duo Security

Proactively reduce the risk of a data breach with Duo. Verify users' identities, gain visibility into every device, and enforce adaptive policies to secure access to every application.

Learn how Duo can protect your Microsoft applications in minutes.

User and device trust for every application

Two-factor authentication (2FA)

Verify the identity of all users with Duo's easy, one-tap-approval 2FA.

Device visibility

Gain visibility into all devices managed and unmanaged to ensure they meet your security standards, before granting them access.

Adaptive authentication

Enforce access security policies based on user, device, and application risk.

Secure single sign-on (SSO)

Streamline the user login workflow with a single dashboard to access all applications.