What Do DNS, Connection, Certificate, and Page Errors Mean?
When you try to visit a website and it does not load, the browser usually shows a generic error message. But not all errors are the same. Some point to a problem with your own internet connection, while others suggest the site itself is down. Understanding the difference between DNS, connection, certificate, and page errors helps you decide what to do next, and whether the issue is something you can fix or something you have to wait out. DNS Errors: The Address Book Is Lost