In previous versions of JBoss EAP 6 the same exception was thrown in response to a number of connection errors that could arise when a Remote Naming client failed to connect to any host. This behavior was sub-optimal as it gave users no indication of the actual error encountered for any given server. The exception thrown in all cases was: ---- javax.naming.NamingException: Failed to connect to any server. Servers tried: [remote://localhost:4447] ---- In this release the exceptions thrown align more closely to the actual cause of the failure. If the host or port details are incorrect, the following +CommunicationException+ will be thrown, indicating the connection timed-out: ---- javax.naming.CommunicationException: Failed to connect to any server. Servers tried: [remote://localhost:4447 (Operation failed with status WAITING after 5000 MILLISECONDS), remote://localhost2:4321 (Operation failed with status WAITING after 5000 MILLISECONDS)] [Root exception is java.net.ConnectException: Operation failed with status WAITING after 5000 MILLISECONDS] ---- If one of the available servers responds, but the subsequent authentication fails, the following +AuthenticationException+ will be thrown: ---- javax.naming.AuthenticationException: Failed to connect to any server. Servers tried: [remote://localhost:4447 (Authentication failed: all available authentication mechanisms failed), remote://localhost2:4321 (Operation failed with status WAITING after 5000 MILLISECONDS)] [Root exception is javax.security.sasl.SaslException: Authentication failed: all available authentication mechanisms failed] ---- An appropriate message will be given for failures connecting to each server in the list.