Join 3,000,000+ Professionals who use AIOSEO to Improve Their Website Search Rankings!
502 Bad Gateway is a HTTP status code that indicates bad communications between the web server and secondary outbound services needed to process requests with those failure responses propagating to the client. Here are some reasons why a 502 Bad…
501 Not Implemented is an HTTP status code, indicating that the server does not support or does not have the capability to fulfill the request method used by the client. Here are some reasons why a 501 Not Implemented error…
500 Internal Server Error is a common HTTP status code that indicates an unexpected issue occurred on the server, preventing it from fulfilling a request made by a client. Here are some reasons why a 500 Internal Server Error HTTP…
451 Unavailable for Legal Reasons is an HTTP status code that indicates a resource or website is inaccessible due to legal reasons, such as censorship, government regulations, or court orders. Here are some reasons why a 451 Unavailable for Legal…
The 418 I’m a Teapot is a whimsical HTTP status code that started as an April Fools’ joke among web developers. Here’s a brief history:
Learn what 410 Gone means and how it differs from other HTTP status codes that signal temporary unavailability of a resource.
404 Not Found is a standard HTTP error message that indicates a client’s request could not be fulfilled because the requested resource could not be found on the server. Site managers can use 404 logs to track instances of links…
404 logs document errors on a web server that occur when a requested page or resource cannot be found. Here are some sample use cases for 404 error logs: Overall, 404 logs provide insight to broken links and visibility into…
403 Forbidden is a HTTP status code indicating that the client does not have permission to access the requested resource on the server. In these cases, the server understands the request but refuses to authorize it for various access control…
401 Unauthorized is a HTTP status code that indicates the client’s request lacks valid authentication credentials for the requested resource, therefore access is denied. Here are some example scenarios that can trigger 401 Unauthorized: Related: