Hi there Tarun,

Your legacy Struts applications will work on any modern WildFly, but you probably will need to exclude many of the bundled modules, so they don't clash with the libraries used in your app. You can do that while setting up the jboss-deployment-assembly.xml descriptor.

Other possibility is try to upgrade your whole application to use the new WildFly dependencies, but that's probably going to be a lot of work. If you just want to deploy and get your app running, the first option will get you there faster.

Have you used the Windup tool for upgrades assessment? This is also called Red Hat Application Migration Toolkit, and will point everything that needs to be upgraded, with suggestions and upgrade paths, for any application you analize, and works with both with compiled code and source.

Let me know if I can help you with anything else!

Best Regards,

Nicolas Alvargonzalez