Enroll Instance appears collection Set must stop error

Error occurs when Enroll Instance in the UCP

The collection sets on the specified instance of SQL Server must is stopped. Validation failed. The collection sets on the specified instance of SQL Server is not stopped. For more information, see the Help topic for this operation.

Scenarion is:

Stop pre-existing collection sets on the specified instance of SQL Server. If The Data Collector is disabled, enable it, stop any running collection sets, then re-run validation rules for the creat e UCP operation.

To enable the Data collector:

In Object Explorer, expand the Management node.

Right-click Data Collection, and then click Enable Data Collection.

To stop a collection set:

In Object Explorer, expand the Management node, expand Data Collection, and then expand System Data Collectio N Sets.

Right-click the collection set, the want to stop, and then click Stop Data Collection set.

A message box would display the result of this action, and a red circle on the icon for the collection set indicates that T He collection set has stopped.

Enroll Instance appears collection Set must stop error