Hi there, I just tried to use wsprovide to generate the JAX-WS portable artifacts for my web service but it fails: anonymous wrote : java.lang.LinkageError: JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI (from jar:file:/C:/programme/Java/jboss-4.2.3.GA/client/jaxb-impl.jar!/com/sun/xml/bind/v2/model/impl/ModelBuilder.class) needs 2.1 API. Use the endorsed directory mechanism to place jaxb-api.jar in the bootstrap classloader. (See http://java.sun.com/j2se/1.5.0/docs/guide/standards/) I already tried to move the jaxb-api.jar from %JBOSS_HOME%/lib to %JBOSS_HOME%/lib/endorsed but that had no effect... I'm using JBoss 4.2.3GA and JDK 1.6.0_12, any ideas how to fix this? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4218029#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...