so recently I’m working on the Aspose and encounter the problem.
I was using .NET Framework 4.8 & Aspose.Cells 24.4.0
I’m able to save the file directly in my local drive, but can’t save by browser.
I’m wondering how to fix it, and do I need to do something in my front-end ?

Below is my code:

I was using AJAX to post formdata so that can get the parameter I need.
**.cshtml
**

@section forms {
    @using (Ajax.BeginForm("Create", "UserExport", null, new AjaxOptions
    {
        OnSuccess = "alertSuccess"
    }, new { id = "frmExport" }))
    ...
    ...
}

Call function in controller
UserExportController.cs

[HttpPost]
[ValidateAntiForgeryToken]
public JsonResult Create(UserExportModel form, IEnumerable<HttpPostedFileBase> uploader)
{
    using (UserExportDac dac = new UserExportDac(GetLoginUser()))
    {
        IList<UserModel> userList = dac.ReadAll();
        if (form.isExcel == "Y"){
           dac.ExportExcel(userList);
        }
        
        ...
        ...
        return Json(new { message = "Generatedd file successfly!" });
    }
}

Using Aspose
UserExportDac.cs

 public void ExportExcel(IList<UserModel> userList)
 {     
     Workbook workbook = new Workbook();

     int index = workbook.Worksheets.Add();
     Worksheet worksheet = workbook.Worksheets[index];

     worksheet.Name = "EMP_USER";

     // Generate the content...
     ...
     ...

     **// This work when I try saving in my local downloads**
     // string filePath = System.Environment.ExpandEnvironmentVariables("%userprofile%/downloads/") + "EMP_USER_COPY.xls";
     // workbook.Save(filePath);

     // Below sample is query from the web, but didn't work me
     MemoryStream memoryStream = new MemoryStream();
     byte[] bytes = ms.ToArray();

     HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);
     response.Content = new ByteArrayContent(bytes);
     response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
     response.Content.Headers.ContentDisposition.FileName = "EMP_USER_COPY.xlsx";
     response.Content.Headers.ContentType = new MediaTypeHeaderValue("Application/x-msexcel");
     workbook.Save(HttpContext.Current.Response, "EMP_USER_COPY.xlsx", Aspose.Cells.ContentDisposition.Attachment, new OoxmlSaveOptions(Aspose.Cells.SaveFormat.Xlsx));
     HttpContext.Current.Response.End();
 }

So currently I was stuck in the saving step.
Any advice would be appreciate it, thanks!!