RobotStudio event

Windows 10 and device discovery

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Hi everyone.
I have 5 controllers in my network. When i go into Add Controller, I can see in the Recent controllers list, all my 5 controllers but all of those have status: Not Found.
By the way if i do Add Controller, and digit controller ip address into the remote controller field, i can connect to that Controller successfully.
I initially thought about a firewall issue, so i've disabled it, but this didn't solve the issue. The strange thing here is that my collague have windows 7 and controller discovery works like a charm. 
Does anyone had an issue like this and knows how to solve ?