I'm trying to help a friend to get their Windows Server 2012 Essentials setup up in their small business. Server is operational, but I'm having issues connecting PCs to it... I'm able to get to the server page by going to http://(servername)\connect I can download the connector software, when I run it it finds the server it ask for user name and password. After entering info it tries to connect for 20-60 seconds and fails with: Cannot coonect this computer to the network The Server is not available. Try connecting this computer again, or for more information, see troubleshooting connecting computers to the server. any idea what could be causing? could this be caused by network issues? They are using ATT DSL for internet access, with a ATT model, that is referred to as "gateway.pace.com" They also have a zyxel smart switch, it seems that both ATT DSL and Zyxel switch are acting as DHCP, and both might be issuing IP addresses. Another thing I noticed that they are using IP phones for all office phones. All PCs are connected to the network with an IP phone as a device in the middle, that seems be slowing down the phones from normal gigabit to 10/100 only. Any help would be grateful.