Celtica's Computer Club > Webscape > HTML Error Codes

HTML ERROR CODES
What do those darned error codes mean? Here's a quick explanation for the most common of them.
 

Code Description Comment
100 Continue  
101 Switching Protocols  
200 Okay Action completed successfully.
201 New Resource Created Request fulfilled following a POST command.
202 Request Accepted Returned META information in the entity-header not definitive set available from origin server. Request accepted but processing not completed
203 Partial Information Response to a GET command, indicates that the returned META information is from a private overlaid web.
204 No Content Server has received the request but there is no information to send back.
205 Reset Content  
206 Partial Content Requested file only partially sent.   Usually caused by stopping or refreshing a web page.
300 Multiple Choices Server couldn't decide what to return.
301 Moved Permanently Requested a directory instead of a file.  Web server substituted INDEX.HTML file.
302 Moved Temporarily  
303 See Other  
304 Not Modified Cached version of requested file same as file to be sent.
305 Use Proxy  
400 Bad Request Request had invalid syntax or was impossible to be satisfied.
401 Unauthorized User failed to provide valid user name / password required for access to file / directory.
402 Payment Required Not currently implemented in the HTTP protocol.
403 Forbidden Access to protected folder was attempted.
404 Not Found Requested file not found.
405 Not Allowed Method used not allowed.
406 Not Acceptable  
407 Proxy Authentication Required  
408 Request Time-Out  
409 Conflict   
410 Gone Away Requested resource no longer available on server and no forwarding address known.
411 Length Required  
412 Precondition Failed  
413 Request Entity Too Large  
414 Request-URL Too Large  
415 Unsupported Media Type  
500 Server Error Server encountered unexpected condition preventing it from fulfilling  request.
501 Not Implemented The server does not support the facility required.
502 Bad Gateway  Server, acting as a gateway or proxy, received invalid response from upstream server accessed in attempting to fulfill  request.
503 Out of Resources The server cannot process the request due to a system overload.  This (should) be a temporary condition.
504 Gateway Time-Out Request was timed out while waiting for gateway.
505 HTTP version not supported HTTP protocol not accepted.