When I load a shapefile into the ArcMap 10.3.1 table of contents from either the ArcMAP built in catalog window, over the yellow plus sign or by drag-and-drop from ArcCatalog, I am then unable to delete the shapefile after I have removed it from my ArcMap window because of a lock. I find it extremely irritating and am unable to delete it until the ArcMAP Application is closed. Even starting a new project doesn´t seem to get rid of the lock file.
Is there anything I can do to stop ArcMap behaving this way?