To Fix ERR_CONNECTION_RESET in Mac, we first need to know the exact cause of it. The issue generally occurs when users are trying to visit a page within a website, but the page lacks to establish a connection to the main website. At this point of time, there are other pages on the website that may or may not work properly. So, at this point of time, users will completely get disconnected from Internet connection while displaying the above error message on your screen.