Excel 除非手动保存，否则ACE.OLEDB无法打开SSRS呈现的XLSX

我们有.NET提供的SSRS报告。他们正在自己渲染和打开。但当我们试图使用ACE 12再次打开它们时，它们在打开连接时失败。读了几遍之后，我发现如果我们手动打开并保存xlsx文件，它会再次与ACE一起工作

因此，这意味着通过.NET解决方案呈现SSR会返回未正确格式化的xlsx。这就是我们正在使用的代码，我想知道这个问题是否与SSRS有关，或者我们是否可以对此采取一些措施。可能下面的代码没有正确呈现xlsx

xls工作正常

OLEDB连接字符串：

Provider=Microsoft.ACE.OLEDB.12.0；数据源={0}；EXCEL2.0的扩展属性；HDR={1}

private static ReportOutput GetReportOutput(ReportConfig reportConfig)
{
    ReportViewer rptViewer = new ReportViewer();
    string urlReportServer = ConfigurationManager.AppSettings.Get(ConfigurationKeyConstants.SSRSUrl);

    rptViewer.ProcessingMode = ProcessingMode.Remote;
    rptViewer.ServerReport.ReportServerUrl = new Uri(urlReportServer);
    rptViewer.ServerReport.ReportPath = string.Format("/SCS/{0}", reportConfig.reportName);
    rptViewer.ServerReport.SetParameters(reportConfig.reportParameters);

    ReportOutput reportOutput = new ReportOutput
    {
        result = rptViewer.ServerReport.Render(reportConfig.outputFormat, null, out string mimeType, out string encoding, out string fileNameExtension, out string[] streams, out Warning[] warnings),
        mimeType = mimeType,
        encoding = encoding,
        fileNameExtension = fileNameExtension,
        streams = streams,
        warnings = warnings
    };

    return reportOutput;
}

//-------------------------------------------
//data = reportOutput.result (in between)
//-------------------------------------------

private static void DownloadReport(byte[] data, string contentType, string filename, HttpResponse response)
{
    Stream stream = new MemoryStream(data);
    byte[] buffer = new Byte[Convert.ToInt32(stream.Length)];
    int length;

    try
    {
        response.ContentType = contentType;
        response.AddHeader("Content-Disposition", String.Format("attachment; filename={0}", filename));

        if (response.IsClientConnected)
        {
            length = stream.Read(buffer, 0, Convert.ToInt32(stream.Length));
            response.OutputStream.Write(buffer, 0, length);
            response.Flush();
        }
    }
    finally
    {
        if (stream != null)
        {
            stream.Close();
        }

        response.Close();
    }
}