If I am not mistaken, the problem occurs because of HackShield which is not compatible with Windows 10. I can not confirm you, because I work on the source code, then I compile myself and upgraded HackShield for lastest version.
There must be a hint that IRIS runs with win10 anyone got a solve?
I saw diffrent Privat-Servers on TOP100 List they runs win10 client.
Or are there a solve to do an owns hackshield server.