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Single User Fails To Connect To Exchange 2010 Server

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  • Single User Fails To Connect To Exchange 2010 Server

    This appears to be happening to just this single user in our 200 user environment. Upon opening Outlook 2007 on a new computer, Outlook successfully auto-configures his account and see's the server. After click ok, Outlook will try open. Down in the system tray it will quickly flash, the exchange server is unavailable and will try to connect when it becomes available again. Right after that, it will say it successfully connected to Exchange and at this point I get:


    "Cannot open your default email folders. Microsoft exchange is not available either there are network problems or..... or the Exchange server is down for maintenance..."

    In the exchange application log I am seeing: Event ID 9646 (Mapi session max connections) tied to this user and 1 other user....

    I have followed a Microsoft article to raise this limit in the registry but still no go.

    Again, this happens to any computer we try to set his Exchange account on, Outlook 2003, 2007 it doesn't matter.

    Actually the 2003 client has a little extra info at the end of the error pointing to an OU object of some sort.

    Any guidance? I've tried a lot of things I've read on the web to no avail. TIA

  • #2
    Re: Single User Fails To Connect To Exchange 2010 Server

    Hi try to reinstall the outlook again and by the way what is the version of the outlook ur using!

    Good luck

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    • #3
      Re: Single User Fails To Connect To Exchange 2010 Server

      Well I've tried different versions of Outlook on different machines and it happens everywhere, (except his own computer of course.)

      The real issue here is that he is trying to login to our terminal server to work from home and Outlook 2007 is installed on there. But, again, I don't think it has to do with Outlook or the terminal server because this is an issue on any new computer he tries to setup his exchange account on... So far, I've tried 2003 and 2007 on different computers. Same results.

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      • #4
        Re: Single User Fails To Connect To Exchange 2010 Server

        If the problem follows the user then it is account related.
        I would check the permissions on the account, ensure that permission inheritance is enabled.

        You may also want to check whether the user has a mobile device and is connecting with that as well. Does the mailbox get shared with a lot of people?

        Simon.
        --
        Simon Butler
        Exchange MVP

        Blog: http://blog.sembee.co.uk/
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        Sembee is a registered trademark, used here with permission.

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