This guide describes how to configure two-factor authentication (2FA) the first time you sign in to your Microsoft 365 account. Microsoft will ask you to use the Microsoft Authenticator app, but you can choose to receive an SMS code or telephone call if the app is not available. If you have problems with the SMS, you can try verification by call.

Configuration of two-factor authentication (first time)

1. Sign in with initial credentials and change your password

   Sign in to your Microsoft 365 account onportal.office.comusing the initial credentials provided. Upon first login, you will be asked to change your password. Enter a new secure password and confirm the change.

   Tip:Create a complex password using a combination of capital letters, lowercase letters, numbers and symbols to ensure maximum security.

2. Reply to the 2FA prompt

   After changing your password, Microsoft will ask you to configure two-factor authentication. Click "Next" to proceed with the setting.

3. Choose the authentication method

   Microsoft suggests using the Microsoft Authenticator app. If you installed it, select "Next" and follow the next steps. Alternatively, choose "I want to configure a different method", select "Telephone" and enter your mobile number to receive a code via SMS or call.

   Tip:For a faster and safer experience, we recommend using the Microsoft Authenticator app instead of SMS or call verification.

4. Manage problems with SMS

   If you do not receive the SMS code, select the option to receive a phone call. If the call is in English, listen to the message and press the # button to confirm the verification.

   Note:Make sure the phone number entered is correct and that your device has a good network connection to receive SMS or calls.

5. Download the Microsoft Authenticator application

   If you choose the Microsoft Authenticator app, download it to your mobile device from the App Store or fromGoogle Play Store.

6. Add a business or school account

   Open the Microsoft Authenticator app, select the plus (+) sign icon on the top menu bar, tap "Business Account or Education Institution" and choose "Sign in". Enter your Microsoft 365 account credentials.

7. Complete the process

   After adding your account to the app or verifying your phone number, click "Next" on your computer to complete the configuration.

Access with two-factor authentication

1. Enter your credentials

   When prompted, enter your usual credentials to sign in to your Microsoft 365 account.

2. Provide additional verification

   You will be asked to provide additional verification through the Microsoft Authenticator app or code received via SMS or call.

   Note:Verification is generally required only for new devices, new apps or after changing your password, unless your organization requires it daily. You can approve a push notification in the Microsoft Authenticator app or enter an app-generated code or received via SMS/call.

3. Approve or enter the code

   Open the Microsoft Authenticator app and tap the approval notification or enter the temporary code displayed. If you use your phone, enter the code received by SMS or call.

4. Open access

   Once the verification is complete, you will sign in to your account.