Microsoft personal/home accounts are the combination of an email address and password that is used to sign-into services like Outlook.com, OneDrive (personal), Windows Phone, or XBOX Live. These accounts aren't associated with TROY M365 services.
It is possible to have a Microsoft personal/home account and a TROY M365 account using the same email address. If a Microsoft personal/home account has been created using a TROY email address, two separate accounts will have been created using the same username. Other than the user name, these accounts are completely independent of each other.
To correct the problem, delete the Microsoft personal account and create a new one using a separate email address.