@mmayorga 

Another thing is the specific error message.

https://learn.microsoft.com/en-gb/azure/databricks/error-messages/error-classes#excel_data_source_no...

I still not get it, why there is this specific "excel" error message?

if i run:

spark.read.format("test").load(excel_file)

 The error message is different:

Py4JJavaError: An error occurred while calling o495.load. : org.apache.spark.SparkClassNotFoundException: [DATA_SOURCE_NOT_FOUND] Failed to find the data source: test. Make sure the provider name is correct and the package is properly registered and compatible with your Spark version. SQLSTATE: 42K02