Hi Halezan,
The network issue you're experiencing with the servers might be caused by a network configuration. Since you're using a Windows Server 2016 machine, it would be best to post your concern on TechNet. The TechNet forum is a community composed of IT professionals that can provide an in-depth assistance to the complexity of your issue. Kindly post your concern in TechNet - Windows Server 2016 General forums.
Should you have other concerns about Microsoft services, feel free to post back.