MAPI and CDO are not supported in Outlook IMO mode

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This article was previously published under Q252720

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SUMMARY

You can install Microsoft Office Outlook in the following modes:

Internet Mail Only (IMO)
Corporate or Workgroup (CW)

A different MAPI subsystem is installed for each of these modes. The MAPI subsystem that is installed in the IMO mode is a stub that provides minimal MAPI support for the basic functionality of Outlook.

Outlook must be installed in the CW mode to provide full support for the following technologies:

Extended MAPI
Simple MAPI
Collaboration Data Objects 1.2x (CDO)
Exchange Developer's Kit (EDK)
MAPI Controls

Programs that use these technologies can run on systems where Microsoft Outlook is installed in the IMO mode, but this mode is not supported.

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MORE INFORMATION

You can switch modes from IMO to CW. For more information about switching modes, click the following article number to view the article in the Microsoft Knowledge Base:

195507 (http://support.microsoft.com/kb/195507/ ) How to switch from one installation type to another in Outlook 2000

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