Refer to the error message, the problem is the network connection. Please try to below:
1. Go to Start>Run, type "cmd"
2. in the Cmmand Prompt pls try to ping the IP address or the server name that you are trying to connect e.g. "ping 192.168.0.122 -t"
3. if there is no response, it means the network connection between your workstation and server is not connected, Please check the network cable or check with your computer hardware vendoer to fix the network connection.