Hi @Joanna Taylor
Generally speaking, when you log in to Teams, if you are prompted to enter the Authenticator security code, the Authenticator on your mobile device will send you a notification showing this digital code.
Reference: Sign in using Microsoft Authenticator
If you are having problems with this, please first confirm that you have added your account to Microsoft Authenticator as a login method.
- Open the Microsoft Authenticator app. Android and iOS
- Click the "+" sign in the upper right corner and select "Work or school account" or "Personal account".
- Scan the QR code provided, or enter the account information manually
Or on your security information page, add Authenticator as a way to verify login.
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