About building applications To build your application About building applications After your project has been fully developed and tested, you can build the application from it. Building the application creates an FCX file, which contains everything needed to run the application after it has been installed in FirstClass. FCX files are encrypted to protect your source code from outside users. This means you can distribute an application to someone to run on their server without them having access to the code you used to create the application. FCX files are stored in the Clustered Services/FCAS Config/Online Applications folder (when FCAS is the name of the gateway) and are automatically loaded when either the application is compiled or the server is started.         Notes Applications run during the build will continue to use any existing older project build configuration. Applications run subsequent to the build will use the new FCX application template. If you built this application previously, the new FCX file will overwrite the old one. Top To build your application 1       Click Build on the FirstClass Project tab of the Project Manager.         The compiled application file (FCX) is added to Online Applications. 2       Restart the server to load the FCX file. Top