Outlook receiving duplicate emails

Posted on 2006-05-08
Last Modified: 2008-02-26

Windows XP Pro
Office XP (outlook 2002)


I have a user who when receiving emails, receives duplicates. That is, she receives more than one of the same email. I've ran detect and repair, but the problem persists. I've spoken with our email host, but they insist the problem is on the user end. Ideas please?
Question by:leftfooter
    LVL 97

    Accepted Solution

    Greetings, leftfooter !

    Here is how to prevent duplicate emails

    Start by checking Rules to be sure that copies are not being made to the Inbox, and make sure that all your rules end in "Stop Processing" actions.

    Then check the task manager to be sure that there is only one instace of Outlook running. Two instances of outlook.exe running can produce two messages arriving at the same time. You will need to then determine why two instances of Outlook were running in the first place.

    Another thing you can do is to delete/remove ALL your e-mail accounts and recreate them. This worked for some people.

    Also, if your running Outlook XP, be sure that you are at service pack 2 or later. You can tell if you need to upgrade at Microsoft Product Updates.

    Finally, another person had this happen when he had two e-mail accounts set up - using two e-mail addresses, but the same POP3 incoming and same SMTP outgoing. What happened is that the second account was getting the e-mails from the POP3 server before they were actually deleted after the first account was finished. If this is the problem you can disable the receive on the second account. There is a Microsoft article explaining the problem more thoroughly at

    Best wishes!
    LVL 97

    Expert Comment


    We have not heard from you. Did any comment help you solve your problem? Do you have any more question? If an Expert helped you, please accept his/her answer above with an excellent or good grade.

    Thanks, war1

    Expert Comment

    Thank you this helped me.

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