HTML error number Daquan
The status line contains the HTTP version, the status code, and a brief description of the status code. In most cases, all answer headers except content-type are optional. However, Content-type is required, and it describes the MIME type of the document that follows. Although most replies contain a document, there are also some that do not include, for example, a reply to a head request that never comes with a document. There are many status codes that are actually used to identify a failed request that does not contain a document (or contains only a brief description of the error message).
When a user tries to access content on a server that is running Internet information services over HTTP, the server returns a numeric code that represents the status of the request. The status code can indicate whether a specific request has succeeded, and can reveal the exact cause of the request failure.
1XX-Informational Tips
These status codes represent a temporary response. The client should be prepared to receive one or more 1xx responses before receiving a regular response. 100-Continue.
101-Switch protocol.
2XX-Success
This type of status code indicates that the server successfully accepted the client request.
200-OK. The client request was successful.
201-created.
202-accepted.
203-Non-authoritative information.
204-no content.
205-Reset the content.
206-Partial content.
3xx-redirect
The client browser must take more action to implement the request. For example, the browser might have to request a different page on the server, or repeat the request through a proxy server.
302-The object has been moved.
304-not modified.
307-Temporary redirection.
4xx-Client Error
An error occurred and the client appears to be having problems. For example, a client requests a page that does not exist, and the client does not provide valid authentication information.
400-Bad request.
401-access is denied. IIS defines a number of different 401 errors, which indicate a more specific cause of the error. These specific error codes are displayed in the browser, but are not displayed in the IIS log:
401.1-Login failed.
401.2-The server configuration caused the login to fail.
401.3-not authorized due to ACL restrictions on resources.
401.4-Filter Authorization failed.
401.5-ISAPI/CGI application authorization failed.
401.7? Access is denied by the URL authorization policy on the WEB server. This error code is specific to IIS 6.0.
403-Forbidden: IIS defines a number of different 403 errors that indicate a more specific cause of the error:
403.1-execution access is forbidden.
403.2-Read access is forbidden.
403.3-Write access is forbidden.
403.4-Requires SSL.
403.5-Requires SSL 128.
The 403.6-IP address is rejected.
403.7-Requires a client certificate.
403.8-site access is denied.
403.9-Excessive number of users.
403.10-Invalid configuration.
403.11-Password change.
403.12-Deny access to the mapping table.
403.13-The client certificate is revoked.
403.14-Reject directory list.
403.15-Client access permission exceeded.
403.16-Client certificate is not trusted or invalid.
403.17-The client certificate has expired or is not yet valid.
403.18-The requested URL cannot be executed in the current application pool. This error code is specific to IIS 6.0.
403.19-CGI cannot be executed for clients in this application pool. This error code is specific to IIS 6.0.
403.20-passport Login failed. This error code is specific to IIS 6.0.
404-not found.
404.0-(none)? No files or directories were found.
404.1-Unable to access the WEB site on the requested port.
The 404.2-web service extension lockout policy blocks this request.
The 404.3-mime mapping policy blocks this request.
405-The HTTP verb used to access this page is not allowed (method not allowed)
406-The client browser does not accept the MIME type of the requested page.
407-proxy authentication is required.
412-Precondition failed.
413? The request entity is too large.
414-The request URI is too long.
415? Unsupported media type.
416? The requested range is not satisfied.
417? Execution failed.
423? The locked error.
5XX-Server Error
The server could not complete the request because it encountered an error.
500-Internal server error.
500.12-The application is busy restarting on the WEB server.
The 500.13-web server is too busy.
500.15-Direct Request Global.asa is not allowed.
500.16? The UNC authorization credentials are incorrect. This error code is specific to IIS 6.0.
500.18? The URL authorization store cannot be opened. This error code is specific to IIS 6.0.
500.100-Internal ASP error.
501-The header value specifies the configuration that is not implemented.
An invalid response was received when the 502-web server was used as a gateway or proxy server. The 502.1-cgi application timed out.
502.2-CGI Application error.
503-The service is not available. This error code is specific to IIS 6.0.
504-The gateway timed out.
505-http version is not supported.
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