We have had this problem for a long time and finally got it to work. we are using port 81 for F-Secure but Windows firewall blocks this. Add a rule in Windows firewall wit advanced Security for the F-Secure Port that you use. got to Control Panel\System and Security\Windows Firewall and choose Advanced Settings Right click on Inbound Rules and choose New Rule Choose Port click Next type in the port number you use for F-Secure click next until you have to give in a name for the rule, and then click finnish when done. this did the trick for us, hope it helps.
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