How to link Azure AD to Microsoft 365 family

Carl K 1 Reputation point

I am trying to set up a Synology backup of my MS 365 account. To do so they have a powershell script that sets up permissions with the account. When running the script I see

Get-AzureADUser : Error occurred while executing GetUser
Code: Authentication_Unauthorized
Message: User was not found.

I am completely new to Azure and signed up for a free account in the hopes creating an authentication but I am lost. There is one user with the admin@Piepel with my email for contact. The issuer: microsoft account with the same email.

1) How do I add my hotmail ID (simply add myself as a user? - didn't want to mess up my current account)
2) There are no apps in "registered apps" how do I connect MS 365 so this script can generate the applcation ID

Any help would be appreciated.

Azure Active Directory
Azure Active Directory
An Azure enterprise identity service that provides single sign-on and multi-factor authentication.
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