A 412 status code indicates that one of the conditions the request was made under has failed. A precondition specified in one or more Request-Header fields returned false.

The server does not meet one of the preconditions that the requester put on the request. i.e.,The header of the request specified information about acceptable files that is not applicable to the requested file.

The problem can only be resolved by examining what your client system is trying to do and then discussing with your ISP why the Web server fails the 'Precondition' specification sent by the client system. If you are monitor your website through 100pulse, we will intimate whenever you encounter 412 status code error through e-mail or Short message service.