in Windows 8.1, Exception is being thrown when the Word Automation(using office2007) run in System Service context.

Hello,

Below code which throws an exception, When run the Word2007 automation in System service context. This issue happened in Windows 8.1 system.

Guid clsid = new Guid("{000209FF-0000-0000-C000-000000000046}");               

 Type servreType = Type.GetTypeFromCLSID(clsid);;
 object theServer = Activator.CreateInstance(ServerType);

 Type typeof_Server = theServer.GetType();

 typeof_Server.InvokeMember("Visible", BindingFlags.SetProperty, null, theServer
                                     , new object[] { true });
 typeof_Server.InvokeMember("DisplayAlerts", BindingFlags.SetProperty
                                     , null, theServer, new object[] { false });

 object documents = typeof_Server.InvokeMember("Documents", BindingFlags.GetProperty, null, theServer, null);

 object theActiveDocument = documents.GetType().InvokeMember("Open", BindingFlags.InvokeMethod, null, documents
                                                               , new object[] { objFileName0, Type.Missing, Type.Missing, Type.Missing
                                                               , Type.Missing, Type.Missing, Type.Missing, Type.Missing
                                                               , Type.Missing, Type.Missing, Type.Missing, Type.Missing
                                                               , Type.Missing, Type.Missing, Type.Missing, Type.Missing});

 try
 {
        object sections = theActiveDocument.GetType().InvokeMember("Sections", BindingFlags.GetProperty
                                                                   , null, theActiveDocument, null); // Exception thrown here.[
Exception from HRESULT: 0x800ADF21]
 }
 catch (Exception exp)
 {
        string strError = exp.Message;
 }

Thanks

karthikeyan