OL2000: COM Add-in Creates Duplicate Menu Items (245542)


The information in this article applies to:

  • Microsoft Outlook 2000
This article was previously published under Q245542

SYMPTOMS

You create an COM Add-in for Outlook 2000 that adds menu commands, but duplicate menu commands appear when you switch folders in Outlook.

CAUSE

There is also an Exchange Client Extension installed that adds a menu command, and Outlook does not handle this situation correctly.

RESOLUTION

This problem was fixed in Outlook 2002.

WORKAROUND

Use one of the following methods to work around this problem:
  • Do not use the Exchange Client Extension that causes a conflict. To determine what extensions are being used by Outlook:
    1. On the Tools menu, click Options.
    2. Click the Other tab, click Advanced Options, and then click Add-in Manager.
  • Instead of adding a command to an existing menu, add your own top-level menu to avoid generating a conflict with an Exchange Client Extension.
  • Instead of developing a COM add-in, create an Exchange Client Extension to avoid the conflict. However, Exchange Client Extensions need to be developed in C/C++. For more information about developing an extension, see the following Microsoft Web site:

    http://msdn.microsoft.com/library/default.asp?url=/library/en-us/exchcli/html/_mapi1book_about_client_extensions.asp

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

REFERENCES

For additional information about available resources and answersto commonly asked questions about Microsoft Outlook solutions, click the article number below to view the article in the Microsoft Knowledge Base:

146636 OL2000: Questions About Custom Forms and Outlook Solutions

Modification Type:MinorLast Reviewed:2/28/2004
Keywords:kbbug kbnofix KB245542
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