Using New Outlook on Windows for personal email, calendar, and contact management
Hello Andy Hart1,
Good day!
Thank you for posting to the Microsoft Community. We are glad to assist.
To run a phishing test in a Microsoft 365 environment it is advised to follow the steps in this article Simulate a phishing attack with Attack simulation training - Microsoft Defender for Office 365 | Microsoft Learn. To resolve the issue you are facing I advise opening a service request in the Microsoft 365 admin center which will help you to unblock your system Get support - Microsoft 365 admin | Microsoft Learn. If you do not have a Microsoft 365 subscription of your own you can ask one of your clients to open it for you. You can also try calling the business phone numbers here Find Microsoft 365 for business support phone numbers by country or region - Microsoft 365 admin | Microsoft Learn, Global Customer Service phone numbers - Microsoft Support.
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