Hi, I have an EAR file with "lib" folder that contains "commons-codec" and a WAR file that uses the libraries located in the "lib" folder. I do not have issues with the other libraries in that folder but with "commons-codec" I receive the exception below. I'm using TomEE 7.0.4 WebProfile and in that distribution there is no "commons-codec" provided by TomEE itself because of this I'm providing it with the EAR file. While debugging I saw that "org.apache.commons.codec" is intentionally filtered by the classloader https://github.com/apache/tomee/blob/master/container/openejb-core/src/main/java/org/apache/openejb/util/classloader/URLClassLoaderFirst.java#L305 How it is supposed to provide this library so that my application can use it? Thanks, Violeta java.lang.ClassNotFoundException: org.apache.commons.codec.binary.Base64 org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1285) org.apache.tomee.catalina.TomEEWebappClassLoader.loadClass(TomEEWebappClassLoader.java:208) org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)