Open a as an Administrator and navigate to the [ServiceDesk_Home]\bin directory. Execute the run.bat command.
Once the application starts in the command line, press Ctrl+C to terminate the process, then restart the service normally. Choosing the Best Licensing Model
If your license has already expired, you may find that the ServiceDesk Plus service will not start, making the UI inaccessible. In this case, you must apply the license through the backend: Stop the service.