To enable Microsoft Fabric, follow steps below. You need Power BI Admin right (or Microsoft 365 Global admin, Power Platform admin).

1. Login to Microsoft Power BI with your Account and go to Power BI Admin Portal

2. Navigate to the tenant settings > Microsoft Fabric (Preview), and expand the Users can create Fabric items (public preview).

3. Uncheck the Accept Microsoft’s default selection (Off for the entire organization) checkbox. You only need to uncheck the Microsoft’s default selection when you enable the Microsoft Fabric setting for the first time.

4. Enable the Users can create Fabric items (public preview) switch.

5. (Optional) Use the Specific security groups option to enable Microsoft Fabric for specific users. You can also use the Except specific security groups option, to enable Microsoft Fabric for the tenant, and exclude specific users.

6. Select Apply.