I don't usually do this - use the blog as a public forum post, unless I've searched the answer in all the places I know. This one is a favor for a friend I can't seem to get done on my own.My friend is desperately trying to solve this problem:

They are trying to create a "Mail Enabled" Contact on an Exchange Server 2003 under Windows 2003 Server, using .NET 1.1.

they are using this article as a base for their work:

http://www.codeproject.com/csharp/CDOExchangeCode.asp

However, they keep getting a "Cast is not valid" exception when trying out this line:

cdoRecipient = (IMailRecipient) cdoPerson

 

 

(IMailRecipient)userObj.NativeObject

they get this:

com error -532459699 unspecified error

 

 

If Anyone has any idea why that's happening (the cast or the 2nd error) and how to do this without causing this error, feel free to post a comment here directing us to the right article/solution.