You can delete one or more items from the quarantine at a time.
To delete items from the local quarantine
In the console on the primary navigation bar, click Monitors.
In the sidebar under Views, click Quarantine.
Do one of the following:
In the sidebar under Tasks, click Select all to select all of the items in the quarantine.
In the list pane under Quarantine, select the items that you want to remove.
To select multiple items, press CTRL and select the items that you want to delete. To unselect all of the selected items, in the sidebar under Tasks, click Deselect all.
In the sidebar under Tasks, click Delete.