Hi SteveBarkhuizen,
If we sign up an Office 365 tenant, the default domain is contoso.onmicrosoft.com. The global admin account looks like *** Email address is removed for privacy ***. When signing up the Office 365 tenant, we need another business email address as below. Therefore, may I
know if you can remember the email address so that you can check if there are any emails from Office 365 when signing up the Office 365 account?
![](https://filestore.community.support.microsoft.com/api/images/0787a901-e029-4bd0-bb9c-6e8486cc2cba)
If
you are not a global admin, I would suggest you contact the global admin in your Office 365 tenant to check the User ID for you.
Regards,
Shirley