I have a configuration of tomcat 4.1.17 which uses a JNDI realm to authenticate to Active Directory Server. It works well. Unfortunately, I must accomplish the same thing in a configuration of Tomcat 4.1.12 in order to be in step with a vendor supplied tool. 4.1.12 is not able to accomplish this particular goal due to a problem in the way it issues an error message inappropriately "javax.naming.PartialResultException" and then fails to authenticate. I would like to know which jar files I need to copy from my tomcat 4.1.17 to replace in my 4.1.12 in order to accomplish the JNDI/LDAP processing. I've already copied the common/lib/jndi.jar and common/lib/naming-factory.jar and they haven't been enough to fix the problem. I need to move as little as possible so as to maintain the 4.1.12 integrity for my vendor supplied tool. Any suggestions would be so appreciated. Thanks, [EMAIL PROTECTED]