Record the definition of each return code for HTTP requests

• 400-the wrong 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-The ACL has not been authorized because of the resource limitation.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 IIS 6.0dedicated. •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-SSL 128 Required. ·403.6-The IP address is denied.403.7-requires a client certificate. •403.8-site access is denied.403.9-excessive number of users.403.10-The configuration is not valid.403.11-password changes.403.12-access to the mapping table is denied.403.13-The client certificate was revoked.403.14-reject directory list.403.15-Client access permission exceeded.403.16-The client certificate is not trusted or invalid.403.17-The client certificate has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 IIS 6.0dedicated. •403.19-CGI cannot be executed for clients in this application pool. This error code is IIS 6.0dedicated. •403.20-passport Login failed. This error code is IIS 6.0dedicated. •404-not found. • 404.0-(None) – No files or directories found.404.1-The Web site cannot be accessed on the requested port.404.2-the WEB service extended lockdown policy blocks this request.404.3-the 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-The 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 met. ·417– Execution failed.423– a locked error.

Record the definition of each return code for HTTP requests