DualShield is a web based application. It dose require certain time for web server (Tomcat) to be up running. Users can observe CPU usage and performance to check whether DualShield server is fully started.
Open Windows Task Manager, go to the processes tab, and search for DualShield Server on Windows 2012 or tomcat6.exe on Windows 2008:
DualShield Server or tomcat6.exe consumes high CPU usage and memory when DualShield service is initiated. Depending on your server's resources, it may take a few minutes for the DualShield service to be fully started. The distinct sign is that the CPU usage of the DualShield service will instantly drop down to almost 0% and maintain low usage. Once fully started, you can launch the DualShield Management Console to login.