After you migrate from Active Response to Trellix EDR, you must remove Active Response extensions from ePO - On-prem.
Log on to ePO - On-prem as administrator.
Remove the following tags from your systems: MARSERVER and MARAGG.
Select Menu → Software → Extensions.
In the Extensions pane, select Active Response to display all related extensions.
Click Remove to uninstall the extensions in the specific order (the components are interdependent).
Active Response Workspace extension
Active Response UI extension
Active Response license extension
Active Response server extension
Important
Make sure that you do not uninstall the Active Response client extension as it is required to monitor the devices that are not migrated to Trellix EDR.