Hi Michał Kobacki,
Thank you for reaching out to us on the Microsoft Q&A forum.
It seems you're encountering an issue while creating a Lakehouse in Microsoft Fabric. The error message indicates that your Microsoft tenant has reached the maximum number of available free trial capacities.
For more details, please refer to the documentation: Microsoft Fabric trial capacity
For a similar issue, please refer to: Microsoft Fabric Trial Issue
Ensure that the Fabric features are enabled and that the workspace you’re using is allocated to the Fabric trial capacity. If you’re still having trouble, it may be a licensing issue with your user accounts. To create Fabric items, a user account must have an associated Pro license.
For additional information, please refer to this thread: Missing the option to create a fabric Lakehouse
Please don't hesitate to reach out to us if you have any other queries.
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