Hi @LeoRickli ,

The step to turn on turn on Serverless SQL warehouses (On) is only required if your account was created before  March 28, 2022. Serverless compute is enabled by default for your workspaces created after that date.

And did you do 1 step from below?

Also, make sure that you meet all requirements:

• Your Databricks account must not be on a free trial.

• Your Databricks workspace must be on the Premium plan.

• Your workspace must be in a region that supports Databricks SQL Serverless. See Databricks clouds and regions.

• Your workspace must have Unity Catalog enabled. See Set up and manage Unity Catalog.

• Your workspace must not use an external Hive legacy metastore. See Remove Hive metastore credentials to enable serverless.