Common HTTP Error Hint code introduction

HTTP Error 400

400 Request Error

The server was unable to understand the request because of a malformed syntax. Without modification, the client cannot repeat the request.

HTTP Error 401

401.1 Not authorized: Login failed

This error indicates that the certificate transmitted to the server does not match the certificate required to log on to the server.

Contact the administrator of the WEB server to confirm that you have access to the requested resource.

401.2 not authorized: The server's configuration caused logon failure

This error indicates that the certificate transmitted to the server does not match the certificate required to log on to the server. This error is usually caused by not sending the correct WWW validation header field.

Contact the administrator of the WEB server to confirm that you have access to the requested resource.

401.3 not authorized: Not authorized due to ACLs in resource

This error indicates that the certificate transmitted by the customer does not have access to specific resources on the server. This resource may be the Web page or file listed in the Address line on the client, or other files on the server required to process the files listed in the address lines on the client computer.

Record the full address you are trying to access, and contact the administrator of the WEB server to confirm that you have access to the requested resource.

401.4 not authorized: The authorization service is rejected by the filtering program

This error indicates that the WEB server has installed a filter to authenticate users who are connected to the server. This filter rejects access to the certificate of Authenticity that is connected to this server.

Record the full address you are trying to access, and contact the administrator of the WEB server to confirm that you have access to the requested resource.

401.5 Not authorized: ISAPI/CGI application failed to authorize

This error indicates that the address in the Web server you are trying to use already has an ISAPI or CGI program installed, which verifies the user's certificate before continuing. This program rejects access to the certificate of Authenticity used to connect to the server.

Please log the full address you are trying to access and contact the administrator of the Web server to confirm that you have access to the requested resource

HTTP Error 403

403.1 prohibition: Prohibit execution of access

This error can be caused by executing a CGI, ISAPI, or other execution program from a directory that does not allow execution of the program.

If the problem persists, contact the administrator of your WEB server.

403.2 prohibition: Read access not allowed

This error can be caused if no default Web page is available or directory browsing is not enabled for this directory, or if an attempt is made to display an HTML page that resides in a directory that is marked only for execution or script permissions.

If the problem persists, contact the administrator of your WEB server.

403.3 prohibit: Write access prohibited

This problem can occur if you attempt to upload or modify a file in a directory that does not allow write access.

If the problem persists, contact the administrator of your Web server.

403.4 Prohibition: SSL Required

This error indicates that the Web page you are trying to access is protected by Secure Sockets Layer (SSL). To view, you must enter https://to enable SSL before the address you are trying to access.

If the problem persists, contact the administrator of your Web server.

403.5 Prohibition: SSL 128 Required

This error message indicates that the resource you are trying to access is protected by 128-bit Secure Sockets Layer (SSL). To view this resource, you need a browser that supports this SSL layer.

Make sure your browser supports 128-bit SSL security. If supported, contact the administrator of the Web server and report the problem.

403.6 prohibit: Deny IP address

If the server contains a list of IP addresses that are not allowed to access this site, and the IP address you are using is in this list, this problem can occur.

If the problem persists, contact the administrator of your Web server.

403.7 prohibition: Require a user certificate

This problem is caused when the resource you are trying to access requires that the browser have a user Secure Sockets Layer (SSL) certificate that is recognized by the server. can be used to verify that you are a legitimate user of this resource.

Contact the administrator of your Web server to obtain a valid user certificate.

403.8 prohibit: no site access

This problem can occur if the Web server does not provide a service for the request, or if you do not have permission to connect to this site.

Contact the administrator of your WEB server.

403.9 No access: too many connected users

This problem can be caused if the web is too busy and cannot process your request because the traffic is too large. Please connect again later.

If the problem persists, contact the administrator of your WEB server.

403.10 No access: Invalid configuration

There is a problem with the configuration of the Web server at this time.

If the problem persists, contact the administrator of your Web server.

403.11 No access: password changed

This error can be caused by the user entering an incorrect password during the authentication process. Please refresh the page and try again.

If the problem persists, contact the administrator of your Web server.

403.12 No access: Mapper denies access

The Deny user certificate attempts to access this web site.

Contact your site administrator to establish user certificate permissions. If necessary, you can also change the user certificate and try again.

HTTP Error 404

404 can't Find Them.

The WEB server could not find the file or script that you requested. Please check the URL to make sure the path is correct.

If the problem persists, contact your server's administrator.

HTTP Error 405

405 does not allow this method

The method specified in the request line is not allowed for the resource identified by the request. Make sure that the correct MIME type is set for the requested resource.

If the problem persists, contact your server's administrator.

HTTP Error 406

406 Not acceptable

Depending on the accepted title sent in this request, the resource identified by this request can generate only response entities that have a content feature that is not acceptable.

If the problem persists, contact your server's administrator.

HTTP Error 407

407 Proxy Authentication Required

You must verify this proxy server before you can provide services for this request. Please log on to the proxy server and try again.

If the problem persists, contact the administrator of your WEB server.

HTTP Error 412

412 Prerequisite Failure

When you test a prerequisite on the server, the prerequisite condition given in the partial request header field is estimated to be false. The client places the prerequisites in the current resource Metainformation (header field data) to prevent the requested method from being misused to other resources.

If the problem persists, contact the administrator of your WEB server.

HTTP Error 414

414 Request-uri too long

Request-url too long, the server refused to service this request. This condition can occur only under the following conditions:

The client incorrectly converts a POST request to a GET request with a longer query information.

The client encountered a redirection problem (for example, a redirection prefix to its own suffix).

The server is suffering from customer interference that attempts to exploit security vulnerabilities in certain servers that use fixed-length buffers to read or perform Request-uri.

If the problem persists, contact the administrator of your WEB server.

HTTP Error 500

500 Internal error on server

The WEB server cannot execute this request. Please retry this request at a later time.

If the problem persists, contact the administrator of your Web server.

HTTP Error 501

501 Not implemented

The WEB server does not support the functionality required to implement this request. Please check the URL for errors, and if the problem persists, contact the Web server administrator.

HTTP Error 502

502 Gateway Error

When used as a gateway or proxy, the server receives an invalid response from the upstream server that it accesses when attempting to implement the request.