event id 9646

Posted on 2006-04-30
Last Modified: 2012-08-13
Mapi session "/o=First Organization/ou=first administrative group/cn=Recipients/cn=Mark.Vega" exceeded the maximum of 250 objects of type "objtMessage".

I get this event in application log every half hour for a while then it goes away for a day or so and then back.

the client is not sending batch email,  there is no virus or spyware on his computer.  he is not sending large number of attachments.  it is always this user, not any other.

the only difference on his computer from others is this program call NEO.  which is a program that indexes outlook folders.  He has 16 pst folders and one ost folder or mailbox.  NEO indexes all of these, and run when ever outlook is open.  I assume that the computer is on all of the time, and that outlook is running all of the time,  I'll have to check.  so it is confusing that this error only occurs intermittently.  

how do I figure out what is causing the problem.


Question by:topprops
    LVL 74

    Expert Comment

    by:Jeffrey Kane - TechSoEasy
    Without a doubt that's your problem... I didn't investigate too deeply, but Event ID 9646 is this error:

    And a quick look at NEO's KB provided these results:


    Author Comment

    well I guess we have to look deeper.  because the microsoft support just suggests that the problem might be an addin.  

    none of tghe neo kb refer to the problem, further search didn't help.

    I may call neo to see if they know anything,

    neo is probably the problem but what is the solution.  client isn't going to give up neo.

    I will suggest he does repair on outlook,  but I have done that in the past already.

    I'll increase the limit to 500 but I don't think that is the issue.  since there are thousands of emails in the index.


    LVL 74

    Accepted Solution


    Since Neo IS an add-in, then I guess Microsoft Support was correct.and here's a more specific MS KB article:


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