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Exchange 2003 / MSExchangeIS Event ID 1233

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  • Exchange 2003 / MSExchangeIS Event ID 1233

    Please Help! I have been searching for a solution on this for a couple of days, so if you have come across this issue and found a solution, please let me know.

    Scenario: When Outlook 2003 users are logged in to Outlook, they are being asked to enter passwords every few seconds, I found a KB 291397 on Microsoft site and I applied their recommendation and it worked for a day and now I am faced with the same issue. I restart the exchange server as well as the DC and this works but I need to find a solution soon.

    Please let me know if you have encountered the same issue and if you have found a solution, please share it with me.

    Thanks in advance.

  • #2
    Re: Exchange 2003 / MSExchangeIS Event ID 1233

    Please upgrade the Exchange, Windows Server, Windows clients, Office to the latest hotfix + service pack level.
    Also, please check the DNS settings (The client may use the ISP's DNS servers ISP's instead of the DC's DNS.

    If the problem will return, you may need to supply further information.


    Best Regards,

    Yuval Sinay

    LinkedIn:, Blog: