Single Sign-On Using Artifact Fails when Federation Manager is Deployed in WebSphere Application Server 5.1.1.3 (6431994)

WebSphere Application Server 5.1.1.3 bundles an older version of javax.xml.namespace.QName which does not have the getPrefix method.

WORKAROUND: After installing Federation Manager, copy fm_staging_dir/web-src/WEB-INF/lib/jax-qname.jar to websphere_install_root/AppServer/lib/qname.jar