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Once configured, Active Directory synchronized users can sign in to Office 365 using two-factor authentication from FortiAuthenticator.

To sign in to Office 365 using FortiAuthenticator with two-factor authentication:

1. Navigate to Office 365 and click Sign in or Switch to a different account.
2. Enter a user account with domain and click Sign in.
3. Authentication is redirected to FortiAuthenticator. Enter your user credentials, and click Login.
   
   Enter your 2FA token or approve the access request from your FortiToken push request.
   
   Once approved you are logged in to your Office 365 account.