public async Task <string> GenerateConfigXml()
        {
            var currentDirectory = Directory.GetCurrentDirectory() + @"\Scripts";

            if (!System.IO.File.Exists(currentDirectory + @"\Generate-ODTConfigurationXML.ps1"))
            {
                currentDirectory = Directory.GetCurrentDirectory() + @"\Project\Scripts";
            }

            var xmlFilePath = Environment.ExpandEnvironmentVariables(@"%temp%\localConfig.xml");

            if (System.IO.File.Exists(xmlFilePath))
            {
                System.IO.File.Delete(xmlFilePath);
            }

            var scriptPath    = currentDirectory + @"\Generate-ODTConfigurationXML.ps1";
            var scriptPathTmp = currentDirectory + @"\Tmp-Generate-ODTConfigurationXML.ps1";

            if (!System.IO.File.Exists(scriptPathTmp))
            {
                System.IO.File.Copy(scriptPath, scriptPathTmp, true);
            }

            var scriptUrl = AppSettings.GenerateScriptUrl;

            try
            {
                await Retry.BlockAsync(5, 1, async() =>
                {
                    using (var webClient = new WebClient())
                    {
                        await webClient.DownloadFileTaskAsync(new Uri(scriptUrl), scriptPath);
                    }
                });
            }
            catch (Exception ex) { }

            var n = 1;
            await Retry.BlockAsync(2, 1, async() =>
            {
                var arguments = @"/c Powershell -ExecutionPolicy Bypass -NoLogo -NonInteractive -NoProfile -WindowStyle " +
                                @"Hidden -File .\RunGenerateXML.ps1";

                if (n == 2)
                {
                    System.IO.File.Copy(scriptPathTmp, scriptPath, true);
                }

                var p = new Process
                {
                    StartInfo = new ProcessStartInfo()
                    {
                        FileName               = "cmd",
                        Arguments              = arguments,
                        CreateNoWindow         = true,
                        UseShellExecute        = false,
                        WorkingDirectory       = currentDirectory,
                        RedirectStandardOutput = true,
                        RedirectStandardError  = true
                    },
                };

                p.Start();
                p.WaitForExit();

                var error = await p.StandardError.ReadToEndAsync();
                if (!string.IsNullOrEmpty(error))
                {
                    throw (new Exception(error));
                }
                n++;
            });

            await Task.Delay(100);

            var configXml = "";

            if (System.IO.File.Exists(xmlFilePath))
            {
                configXml = System.IO.File.ReadAllText(xmlFilePath);
            }

            try
            {
                var installOffice = new InstallOffice();
                var updateUrl     = installOffice.GetBaseCdnUrl();
                if (!string.IsNullOrEmpty(updateUrl))
                {
                    var pd          = new ProPlusDownloader();
                    var channelName = await pd.GetChannelNameFromUrlAsync(updateUrl, OfficeEdition.Office32Bit);

                    if (!string.IsNullOrEmpty(configXml) && !string.IsNullOrEmpty(channelName))
                    {
                        configXml = installOffice.SetUpdateChannel(configXml, channelName);
                    }
                }
            } catch { }

            return(configXml);
        }