If you use the Outlook object model to reference an item
that requires a custom form, you may receive the following error message:
The custom form could not be opened Outlook will use an
Outlook form instead.
This may prevent the completion of your
This error can also occur if the item uses a custom form
written in C++ and that form does not implement IDispatch.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
MAPI forms need IDispatch
Interfaces to be implemented
To resolve this problem, obtain Microsoft Office 2000
Service Release 1/1a (SR-1/SR-1a).
To obtain SR-1/SR-1a, click the
article number below to view the article in the Microsoft Knowledge Base:
How to obtain and install
Microsoft Office 2000 Service Release 1/1a (SR-1/SR-1a)
The SR-1 update suppresses the warning message and loads the
default form so that your program can continue.
has confirmed that this is a problem in the Microsoft products that are listed
at the beginning of this article.
This problem was corrected in Microsoft Office 2000