Excel 2013 COM API 在服务帐户下挂起 ExportAsFixedFormat

我有一个 .NET Windows 服务，它调用 Excel 2013 COM API 以在 PDF 上导出 Excel 文档，我已尝试使用在两个不同域帐户下运行的 Windows 服务来执行此代码，这两个帐户都是运行代码的计算机上的本地管理员。在我的个人帐户下（我也用该帐户登录到机器），代码按预期执行。在未登录计算机的服务帐户（活动目录帐户）下，Excel 文档已打开，但导出逻辑永远不会返回，并且当我停止服务时，该服务打开的 Excel 实例仍保持打开状态。

这是我正在使用的代码：

object paramMissing = Type.Missing;
                XlFixedFormatType paramExportFormat = XlFixedFormatType.xlTypePDF;
                XlFixedFormatQuality paramExportQuality = XlFixedFormatQuality.xlQualityStandard;
                bool paramOpenAfterPublish = false;
                bool paramIncludeDocProps = true;
                bool paramIgnorePrintAreas = false;
                object paramFromPage = Type.Missing;
                object paramToPage = Type.Missing;

                Workbook excelWorkBook = null;
                try
                {
                    // Open the source workbook.
                    excelWorkBook = excelApplication.Workbooks.Open(file,
                        paramMissing, paramMissing, paramMissing, paramMissing,
                        paramMissing, paramMissing, paramMissing, paramMissing,
                        paramMissing, paramMissing, paramMissing, paramMissing,
                        paramMissing, paramMissing);

                    // Save it in the target format.
                    if (excelWorkBook != null)
                        excelWorkBook.ExportAsFixedFormat(paramExportFormat,
                            Directory.PdfDirectory + directoryName + @"\"+ Path.GetFileName(file).Replace(".xlsx", ".pdf"), paramExportQuality,
                            paramIncludeDocProps, paramIgnorePrintAreas, paramFromPage,
                            paramToPage, paramOpenAfterPublish,
                            paramMissing);
                }
                catch (Exception)
                {
                    throw;
                }
                finally
                {

                    // Close the workbook object.
                    if (excelWorkBook != null)
                    {
                        excelWorkBook.Close(false, paramMissing, paramMissing);
                        excelWorkBook = null;
                    }
                }