What is Microsoft Entra authentication?

Authentication is the process of verifying a person's identity before granting access to a resource, application, service, device, or network. It's how a system makes sure users are who they say they are when they try to sign in.

Authentication methods supported by Microsoft Entra ID

The following table outlines when an authentication method can be used for primary or first factor authentication, secondary factor authentication when you use Microsoft Entra multifactor authentication (MFA) and for self-service password reset (SSPR).

Method Primary authentication Secondary authentication
Windows Hello for Business Yes MFA1
Platform Credential for macOS Yes MFA
Microsoft Authenticator passwordless Yes No
Microsoft Authenticator push notifications Yes MFA and SSPR
Software OATH tokens No MFA and SSPR
External authentication methods (preview) No MFA
Temporary Access Pass (TAP) Yes MFA
Short Message Service (SMS) sign-in Yes MFA and SSPR
Voice call No MFA and SSPR
Password Yes No

1Windows Hello for Business can serve as a step-up MFA credential if a user is enabled for passkey (FIDO2) and has a passkey registered.

Phishing-resistant authentication methods

While traditional MFA with SMS, email OTP or authenticator apps significantly improves security over password-only systems, these options introduce friction—requiring additional steps for users, like entering codes, approving push notifications, or using authenticator apps. Moreover, these options for MFA are prone to remote phishing attacks. Remote phishing is where attackers use social engineering and AI-driven tools to steal identity credentials—like passwords or one-time codes—without physical access to a user's device.

Microsoft recommends using phishing-resistant authentication methods such as Windows Hello for Business because they provide the most secure sign-in experience.

The following phishing-resistant authentication methods are available in Microsoft Entra ID.

  • Windows Hello for Business
  • Platform Credential for macOS