Upgrading Java from 7u161 to 7u171 prevents JBoss AS 7.1.1.Final from starting. I know JBoss AS 7.1.1 is EOL but for compatibi
Could you try upgrading jboss-modules.jar (found in the root folder of the jboss-as binary distribution) to 1.1.5.GA?
The version of jboss-modules which comes with jboss-7.1.1.Final is 1.1.1.GA and it has a few issues with initialisation order and multiple-initialisation which could be causing the issue.