Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi there, Emily.
Welcome to Microsoft Community.
I recommend checking if your work email account is set up for multi-factor authentication (MFA) with the Microsoft Authenticator app. You may need to contact your IT administrator to ensure that your work email is configured correctly for use with the app. If the issue persists, you can try reinstalling the app and adding your work email account again. Also, if you're getting any specific error message while trying to use this email account through the authenticator app, let me know along with every detail related to your case.
Best regards,
Oscar Calvo
Microsoft Community Support