Delete a Historian System About this taskYou can delete a Historian system if you no longer want to manage it using Configuration Hub. You cannot, however, delete a system if it is set as default. Procedure Access Configuration Hub. In the NAVIGATION section, under the Configuration Hub plugin for Historian, select Systems. A list of systems appears in the main section. Right-click the system that you want to delete (or select ), and then select Delete. A message appears, asking if you want to delete the system. Select Delete. The system is deleted.