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Hi, I have a program that uses MAPI to send the mail using outlook express client. when I tried with outlook express it works fine. But when I tried with Windows mail my program is not able to login. It gives the error as "logon return code: 3 Err Msg: MAPI login fail".

So I think there must be additional security settings are implemented on windows mail. But as per microsoft there is no changes between outlook express and WIndows mail in functionality. So please help me out to send and recieve mails using MAPI through windows mail. Or suggest me any alternative way to do this.

If i run my application it works fine.. If i run in service mode it gives this MAPI logon failure error. Thanks in advance.