A custom MAPI transport program may not function as expected with Outlook 2002

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Article ID: 321419 - View products that this article applies to.
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If you use a custom MAPI transport program with Microsoft Outlook 2002 (for example, if you use a program that permits you to select the security-level [classification] of an outgoing e-mail message), your custom MAPI transport program may not function as expected.


This problem may occur if your custom MAPI program uses preprocessor functions in a custom MAPI transport provider. This problem may occur even if the IMAPISupport::RegisterPreprocessor method returns the value S_OK becuase Outlook 2002 still may not call the preprocessor function of the custom MAPI transport provider.


To resolve this problem, install Microsoft Office XP Service Pack 3 (SP3).

For additional information about how to obtain and install Office XP Service Pack 3, click the following article number to view the article in the Microsoft Knowledge Base:
832671 Description of Microsoft Office XP Service Pack 3


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.


Article ID: 321419 - Last Review: October 24, 2013 - Revision: 1.1
  • Microsoft Outlook 2002 Standard Edition
kbnosurvey kbarchive kbqfe kbofficexppresp3fix kbbug kbfix KB321419

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