Standard (formerly shared) cluster not allowing use of Machine Learning Runtime

Use a dedicated compute with a group including the list of users.

Written by david.vega

Last published at: July 17th, 2025

Problem

When you try to create a standard (formerly shared) compute with Machine Learning Runtime, you get the following message. 

“Databricks Runtime for Machine Learning does not support User Isolation security mode. Use Single User security mode if you need to access Unity Catalog.”

 

Cause

Databricks Runtime ML and Spark Machine Learning Library (MLlib) are not supported in standard compute.

 

Solution

Use a dedicated (formerly single-user) compute attached to a group with the required list of users. 

 

For details, refer to the Assign compute resources to a group (AWS | Azure | GCP) documentation.