Please check host server is running properly and check host server is behind firewall also port 445 and 135 is accessible. If the server is behind firewall and if not accessible, then open the port by configuring the firewall.
Please check Dot Net platform is installed in your system. Run the utility available in the bin directory, Check_Dot_Net_version.exe , It will tell you the Dot Net version. If Dot Net platform is not available in the system, download the platform. Please see the software requirements page for downloading the platform.
Yes a single server can be monitored.
Based on the Percentage CPU Utilization and CPU Threshold values, the tool will show the alert signals on the Dashboard to intimate status to the user.