I am calling a Java service from WCF using wsHttpBinding and TransportWithMessageCredential. It works fine when calling it directly via WCF. I get an error when calling it from BizTalk via WCF adapter and transport type WCF-wsHttp. The error message is: "Security processor was unable to find a security header in the message". The config files are absolutely identical; i imported the config file into Biztalk. The problem has been describe in another situation on the page: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1040876&SiteID=1; but this doesnt help. CAN ANYONE HELP PLEASE