Situation: The user reports she received duplicated emails.
Troubleshooting: We check the trace messages, but don’t see any duplicated emails sent. The user can’t show us the duplicated emails. However, she says she received the email last night and then she get the the same new email this morning.
After study, we find that she use Office.com to check email last night. Then she used Outlook to check email this morning. The system pay have a problem to sync so that she thought she may have a new email.