Joakim Erdfelt This looks like you have the Weld on the classpath but there is no bean archive in the deployment (no /WEB-INF/beans.xml, /WEB-INF/classes/META-INF/beans.xml and no beans.xml in any library jar). You can enable debug logging to see which bean archives are processed. In any case, we should handle this situation better, e.g. throw an IllegalStateException with appropriate message .