HTTP status codes are three-digit numbers that provide Web browsers with information about the page's status. You might see some of these errors while browsing the Internet, or you might have received them in your own hosting account.
Here's a quick guide to help you understand the most common error codes with suggestions for what to do to fix the error:
.htaccess files, or invalid rules in them, commonly cause 500 errors with Linux® hosting accounts. With Windows®, it's most commonly invalid requests through a
web.config file using the following code:
<configuration> <system.webServer> <httpErrors errorMode="Detailed"/> </system.webServer> </configuration>
For more information, check out the list of status code definitions at W3.org: