What does Outlook 2003 error 0x8000FFFF mean?

Posted on 2009-02-11
Last Modified: 2012-05-06
A user of mine opened Outlook this morning and got the following message:

Unknown error occured. See below information for details.



Code: 0x8000FFFF;

Code meaning: Catastrophic failure;

Description: ;

Source: ;

Called function: EXPLORER::HandlerOnClickButtonStart::DispEventAdvise;



Function: CMLExplorer::Controls_FindCreateAdvise;

File name: .\Explorers\MLExplorer.cpp;

Line: 236.


Press Yes button to copy error information to clipboard to send it to developers

Outlook is working fine. They can send and receive e-mails like normal. All other applications on the PC are working fine. Any idea what this error is for/from? I have not rebooted the machine to see if it happens again. I will do this at the end of the work day to limit downtime.
Question by:mhdcommunications
    LVL 47

    Accepted Solution

    This error is a result of 3rd party add in, Mapi Labs.
    Possibley "Duplicate Remover"

    You can uninstall it or disable it in the Registry

    LVL 1

    Author Closing Comment

    Thats what i thougt it was, just wanted to verify. Thanks a bunch.

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