Though the DL4J setup doesn't seem complex, installation issues can still happen because of different OSes or applications installed on the system, and so on. CUDA installation issues are not within the scope of this book. Maven build issues that are due to unresolved dependencies can have multiple causes. If you are working for an organization with its own internal repositories and proxies, then you need to make relevant changes in the pom.xml file. These issues are also outside the scope of this book. In this recipe, we will walk through the steps to mitigate common installation issues with DL4J.