JQuery Ajax post request with bulk file failing intermittently

Question

JQuery Ajax post request with bulk file failing intermittently and in IE9 its not working at all.

Sometimes Ajax request won't call respective MVC action.

uploaded file size-8MB.

JQuery version-1.8.3.

Error i'm getting is: XMLHttpRequest: Network Error 0x2ee4, Could not complete the operation due to error 00002ee4.

code snippet:

 var form = new FormData($("#EmailForm")[0]);

                    $.ajax({
                        type: "POST",
                        url: rootUrl+"Email/Index",
                        data: form,
                        contentType: false,
                        processData: false,
                        dataType: "json",                        
                        cache: false,
                        timeout: 300000,
                        success: function (data) {
                          
                            if (data.Ok=="0") {

                                $('#lblInfo').css("display", "block");
                                var error = data.Message.split('&&');
                                error.forEach(function (message) {
                                    $('#lblInfo').append('<ul><li>' + message + '</li></ul>');
                                });
                                $(window).scrollTop(0);
                            }
                            else {
                                $('#lblInfo').css("display", "none");
                                var success = data.Message;

                                var url = rootUrl+"Tag/Index?EmailData="+success;
                                window.location.href=url;

                            }
                        },
                        error:function (data)
                        {

                           
                            $('#lblInfo').append('Some Unknown Error Occured!');
                                                

                        }
                    });

any help is appreciated.

Answer 1

Try to add async:false in ajax parameter. sometimes this will be a problem.

Answer 2

Seems like an existing IE11 issue:

IE10/IE11 Abort Post Ajax Request After Clearing Cache with error "Network Error 0x2ef3"