Process gets stuck in oSession.Logoff() - outlook

Question

Pstcreation works properly with outlook installed.
Now, I am trying to create a pst file with standalone version of MAPI . But my process is stuck in oSession.LogOff(). Further if a comment that oSession.LogOff() line and subsequently call the CreatePstWithRedemption function to create an other pst, the process gets stuck in oSession.LogonPstStore
private bool CreatePstWithRedemption(EmailJTableArgs objJTablArgs, EmailFilterArgs objFilterArgs,
EmailExportRequestParams emailExportRequestParams)
{
RDOSession oSession = null;
IRDOStore store = null;
RDOFolder fFOlder = null;
RDOFolder childFolder = null;
IRDOItems folderItems = null;
var pstCreationStatus = false;
try
{
oSession = new RDOSession();
store = oSession.LogonPstStore(_fileName, 1, "PST");
var folderName = Path.GetFileNameWithoutExtension(_fileName);
if (store != null)
{
fFOlder = store.IPMRootFolder;
foreach (RDOFolder folder in fFOlder.Folders)
{
folder.Delete();
}
childFolder = fFOlder.Folders.Add(folderName, Type.Missing);
folderItems = childFolder.Items;
var resultOfGetEmails = new ResultGetEmails();
resultOfGetEmails.TotalCount = -1;
do
{
var journalEmails = GetEmailList(objFilterArgs, objJTablArgs, emailExportRequestParams,
resultOfGetEmails);
for (var i = 0; i < journalEmails.Count; i++)
{
IRDOMail mail = null;
try
{
mail = folderItems.Add(rdoItemType.olMailItem);
// populate mail fields
mail.Sent = true;
mail.Save();
}
finally
{
if (mail != null)
Marshal.ReleaseComObject(mail);
}
}
resultOfGetEmails.TotalCount -= BatchSize;
objJTablArgs.PageStartIndex += BatchSize;
} while (resultOfGetEmails.TotalCount > 0);
pstCreationStatus = true;
}
}
finally
{
// Do cleanup
if (oSession != null && oSession.LoggedOn)
{
try
{
oSession.Logoff();
Marshal.ReleaseComObject(oSession);
}
catch
{
}
}
}
return pstCreationStatus;
}
Note: The same thing works well when run in an environment where outlook is installed.