Hi, I'm also having interoperability problems with JBossWS and WSE 3.0. I call a JBossWS helloWorld service using a .Net WSE 3 client and it simple does not work with ws-encryption. I tried every possible configuration on the .Net client. Signing only the message, however, the server processes the message correctly and returns the SOAP response to the client. The .Net client then throws an exception while processing the response: "An unsupported signature or encryption algorithm was used". Did anyone try using ws-encryption (encrypting and/or signing messages) with .Net WSE 3.0 and JBossWS (jboss-4.0.5.GA)? Thank you! Rafael Mártony. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3986112#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...