Hello, I am a student and I need your help please. As part of my end-of-cycle project, I have installed a Skype server for Business Server respecting all prerequisites requested: DNS records ..., I obviously installed a domain controller beforehand. All in a HYPER V virtualizer. The installation of the S4B server was very successful. When I try to connect through a 2013 lync client on my physical machine, a message appears informing me that the server is temporarily unavailable. thank in advance.