C# Programm on Exchange Server 2000:
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ADODB.Connection cnn = new ADODB.ConnectionClass();
string bstrURLItem = "http://localhost/Exchange/administrator/calendar";
cnn.Open(bstrURLItem,"administrator","123", 0);
//here Catch Exception:System.Runtime.InteropServices.COMException
(0x80040E4D): Authentication failed.
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This programm is correct on Exchange Server 2003.However,on Exchange Server
2000 it has the exception.I can ensure that the username,password and URL are
correct.