| HTTP Status Code | Error | Message Description |
| Informational 1xx | Request received, continuing process | |
| 100 | Continue | Defined for HTTP/1.1 |
| 101 | Switching Protocols | Defined for HTTP/1.1 |
| 150 | Disk Full Error | Content Analyzer could not fulfill the request because the hard disk is full. |
| 151 | DNS Hostname Lookup Failure | |
| 152 | Unable to Connect | The hostname was resolved, but Content Analyzer could not connect to the Web server. |
| 154 | Expired Security Certificate | Content Analyzer could not fulfill the request because of an expired security certificate. |
| 155 | Invalid Security Certificate | Content Analyzer could not fulfill the request because of an invalid security certificate. |
| 156 | Server Requesting Client Certificate | Content Analyzer could not fulfill the request because the server is requesting a client security certificate. |
| 157 | Cannot Validate Certification Authority of Security Certificate | Content Analyzer could not fulfill the request because the server could not validate the security certificate’s certification authority. |
| Successful 2xx | The action was successfully received, understood, and accepted | |
| 200 | OK | Defined for HTTP/1.1 -The request to the server was successful. The resource was successfully retrieved. |
| 201 | Created | Defined for HTTP/1.1 - The request for a new resource was created by the Web server. |
| 202 | Accepted | Defined for HTTP/1.1 - The request to the Web server has been accepted for processing, but the processing is not yet complete. |
| 203 | Non-Authoritative Information | Defined for HTTP/1.1 |
| 204 | No Content | Defined for HTTP/1.1 - The Web server has fulfilled the request, but there is no new information to report. |
| 205 | Reset Content | Defined for HTTP/1.1 |
| 206 | Partial Content | Defined for HTTP/1.1 |
| Redirection 3xx | Further action must be taken in order to complete the request | |
| 300 | Multiple choices | Defined for HTTP/1.1 |
| 301 | Moved Permanently | Defined for HTTP/1.1 - The requested resource has been assigned a new permanent URL and any future references to this resource should be made using that URL. |
| 302 | Moved Temporarily | Defined for HTTP/1.1 - The requested resource resides temporarily under a different URL. |
| 303 | See Other | Defined for HTTP/1.1 |
| 304 | Not Modified | Defined for HTTP/1.1 - The client request for modification did not take place. |
| 305 | Use Proxy | Defined for HTTP/1.1 |
| Client Error 4xx | The request contains bad syntax or cannot be fulfilled | |
| 400 | Bad Request | Content Analyzer’s request was not understood by the server due to an error. |
| 401 | Password Protected (unauthorized) | Defined for HTTP/1.1 - A password or some other security code is required to gain access to the resource. |
| 402 | Payment Required | Defined for HTTP/1.1 |
| 403 | Forbidden | Defined for HTTP/1.1 - Content Analyzer’s request to access the resource was denied for a reason other than a password requirement. |
| 404 | URL Does Not Exist (not found) | Defined for HTTP/1.1 - Content Analyzer is able to connect to the Web server, but the resource was not on the server. This causes a truly broken link, and until it is fixed, the resource is unavailable. |
| 405 | Method Not Allowed | Defined for HTTP/1.1 - The client tried to access a resource using a method (e.g., POST, HEAD, and so on) that is not allowed for that resource. |
| 406 | Not Acceptable | Defined for HTTP/1.1 - The resource was found but could not be delivered because the type of the resource is incompatible with the acceptable types indicated by the accept or accept-encoding headers sent to the server by the client. |
| 407 | Proxy Authentication Error | Defined for HTTP/1.1 - Content Analyzer could not fulfil the request because of a proxy authentication error. |
| 408 | Request Time-out | Defined for HTTP/1.1 |
| 409 | Conflict | Defined for HTTP/1.1 |
| 410 | Gone | Defined for HTTP/1.1 |
| 411 | Length Required | Defined for HTTP/1.1 |
| 412 | Precondition Failed | Defined for HTTP/1.1 |
| 413 | Request Entity Too Large | Defined for HTTP/1.1 |
| 414 | Request-URI Too Large | Defined for HTTP/1.1 |
| 415 | Unsupported Media Type | Defined for HTTP/1.1 |
| Server Error 5xx | The server failed to fulfill an apparently valid request | |
| 500 | Internal Server Error | Defined for HTTP/1.1 - Content Analyzer is able to connect to the server, but the server was unable to process the request. The server was having technical difficulties, or there was some problem with Internet traffic or connections. |
| 501 | Not Implemented | Defined for HTTP/1.1 - The Web server does not support the functionality required to fulfill the request. The server does not recognize the request and could not support it. |
| 502 | Bad Gateway | Defined for HTTP/1.1 - The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request. |
| 503 | Service Unavailable | Defined for HTTP/1.1 - The server is currently unable to handle the request due to maintenance or a temporary overloading of the server. This is a temporary condition. |
| 504 | Gateway Time-out | Defined for HTTP/1.1 |
| 505 | HTTP Version not supported | Defined for HTTP/1.1 |