when i downloaded into system in libre office and wps office the excel file is opening but in Ms Excel the file is throwing error

vf page
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<apex:page standardStylesheets="false" id="pge" standardController="Order" extensions="OrderExcelGenerationController" applyHtmlTag="false" applyBodyTag="false" showHeader="false" contenttype="application/vnd.ms-excel#orderForm.xls"> {!xmlHeader} <Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:xdr="http://schemas.openxmlformats.org/drawingml/2006/spreadsheetDrawing" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:m="http://schemas.openxmlformats.org/spreadsheetml/2006/main"> <ExcelWorkbook xmlns="urn:schemas-microsoft-com:office:excel"> <WindowHeight>8535</WindowHeight> <WindowWidth>12345</WindowWidth> <WindowTopX>480</WindowTopX> <WindowTopY>90</WindowTopY> <ProtectStructure>False</ProtectStructure> <ProtectWindows>False</ProtectWindows>
</ExcelWorkbook>
<DocumentProperties xmlns="urn:schemas-microsoft-com:office:office">
<Author></Author> <LastAuthor></LastAuthor> <Company></Company> <Version>11.6360</Version>
</DocumentProperties>
<Worksheet ss:Name="Sheet1">
<Table ss:ExpandedColumnCount="100">

<Column ss:AutoFitWidth="0" ss:Width="0" ss:Hidden="1"></Column>
<Column ss:AutoFitWidth="1" ss:Width="200"></Column>
<Column ss:AutoFitWidth="2" ss:Width="200"></Column>
<Column ss:AutoFitWidth="3" ss:StyleID="" ss:Width="150"></Column> <Column ss:AutoFitWidth="4" ss:StyleID="" ss:Width="150"></Column> <Column ss:AutoFitWidth="5" ss:Width="150"></Column> <Column ss:AutoFitWidth="6" ss:Width="150"></Column> <Column ss:AutoFitWidth="7" ss:Width="150"></Column>
<Row ss:Height="40">
<Cell>
<Data ss:Type="String">AUD</Data></Cell>
<Cell ss:MergeAcross="5" ss:StyleID="s1">
<Data ss:Type="String">ORDER FORM</Data>
</Cell>
</Row>
<Row ss:Height="20"> <Cell>
<Data ss:Type="String"></Data>
</Cell>
</Row>
<Row ss:Height="20">
<Cell>
<Data ss:Type="String">AUD</Data></Cell>
<Cell ss:MergeAcross="">
<Data ss:Type="String">HOTEL</Data> </Cell> </Row>
</Table>
</Worksheet>
</Workbook>
<apex:outputText value="{!endFileXML}" escape="false" /> </apex:page>

public with sharing class OrderExcelGenerationController
{
public string accountName {get;set;}
public string endfile {get;set;}
public Set<String> type {get;set;}
public String endFileXML {get;set;}
public OrderExcelGenerationController(ApexPages.StandardController controller)
{
endFileXML = '</Workbook>'; orderId=ApexPages.currentPage().getParameters().get('orderId'); //Id orderId='8010T000000D31JQAS';
order = [SELECT Id,Name,Account.Name,Account.ShippingStreet,Account.ShippingCity,Account.ShippingState,Account.ShippingPostalCode,Account.ShippingCountry FROM Order WHERE Id=:orderId];
xmlheader ='<?xml version="1.0"?><?mso-application progid="Excel.Sheet"?>'; endfile = '</Workbook>';

lighnting component - js
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var result=response.getReturnValue();
let downloadLink = document.createElement('a'); downloadLink.download = result.orderFileName+'.xlsx'; downloadLink.href = 'data:application/excel;base64,'+result.orderFileContent; downloadLink.click();

Hi All,

I want to import Json file into my leads record using apex and visualforce page.
Please help.