1 Head to Finder
Turn off the Wi-fi connection on your Mac and then close all of your apps. In Finder, click on Go>go to folder and type: / Library/preferences>system Configuration/ and click ‘Go’.
Turn off the Wi-fi connection on your Mac and then close all of your apps. In Finder, click on Go>go to folder and type: / Library/preferences>system Configuration/ and click ‘Go’.