It can occur that when your server operating system is updated you lose access to FileMaker Server and the FileMaker Server Admin Console.
FileMaker's Support Methodology identifies the application as a factor to consider when troubleshooting an issue. The most certain way to rule out the Server application is to perform a clean uninstall and reinstall of FileMaker Server. Follow the steps below to completely uninstall FileMaker Server while preserving your settings and data.
This article will walk through the recommended steps