This video will show how to open ports in "Windows Firewall for StruSoft License System"
Portrange 27000 to 27009
StruSoft License Server Manager
Port 55555
StruSoft Vendor Daemon
Port 8090
StruSoft Web Server
This must be done both on the client computers and the license server
Notice that it can be other firewalls or a antivirus system that can block communication