Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Julie John
It sounds like the account is requesting a multi-factor authentication (MFA) verification code, but you're not receiving it through any available method. Based on you thread's tag that you are using a Microsoft 365 business account, your organization's administrator may have configured Multi-Factor Authentication (MFA) or authentication methods. So please contact your Microsoft 365 administrator to verify your registered authentication methods and ensure they are working correctly.
If you cannot access any authentication method, you can contact your organization's IT administrator and request a reset of your MFA settings by following this article: Manage authentication methods for Microsoft Entra multifactor authentication - Microsoft Entra ID | Microsoft Learn
I hope this information helps.
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