Hi @Roger Chester , Family 365 is a subscription plan designed for home users and does not include access to Azure services like Office 365 Business Premium or other business plans do. Therefore, you cannot obtain an Azure Tenant ID with a Microsoft 365 Family subscription. If you need Azure services and a Tenant ID, you may need to consider upgrading to a business plan or creating a separate Azure subscription.
Please let me know if you have any questions and I can help you further.
If this answer helps you please mark it as "Verified" so other users can reference it.
Thank you,
James