About Microsoft Authenticator - Microsoft Support This is called two-step verification or multi-factor authentication As the only way to sign in - just tap an approval on your phone to sign in This is called going passwordless Just follow the three steps to start using Authenticator to sign in Get the app Add your account Learn how to sign in
Protections for CVE-2025-26647 (Kerberos Authentication) While in Audit mode, Event ID: 45 will be logged on the domain controller when it receives a Kerberos authentication request with an unsafe certificate The authentication request will be allowed and no client errors are expected
Sign in using Microsoft Authenticator - Microsoft Support Microsoft Authenticator helps you sign in to your accounts if you've forgotten your password, use two-step verification or multi-factor authentication, or have gone passwordless on your account
Sign in to your work or school account using two-step verification . . . If you have problems signing in with two-step verification, get more information at Having trouble with Two-factor Authentication Find out how to Get started with the Microsoft Authenticator app so that you can use notifications to sign in, instead of texts and phone calls
How to add your accounts to Microsoft Authenticator If your organization supports two-factor verification or multi-factor authentication sign-in, you can set up your work or school accounts to use Authenticator as one of the verification methods
Microsoft Authenticator in Link to Windows Conveniently and securely sign in to all your online accounts using multifactor authentication, passwordless sign-in or password autofill with Microsoft Authenticator