There are two common error codes that are experienced when using remote management to connect to a target machine.
10060 - Connection Timed Out - InduSoft attempted to connect to the computer at the given ip address, but did not receive a reply before the timeout expired. If the ip entered is correct, then this is usually a firewall issue blocking the connection. It can also be caused by routing issues making windows unable to reach the computer, usually pinging the ip address will fail if this is true. Allow CEServer.exe through the firewall, disable the firewall(not recommended), or setup a proper route to resolve this issue.
10061 - Connection Refused - InduSoft attempted to connect to port 4322 at the given ip address, however the computer actively refused the connection. This is usually caused by CEServer(Remote Agent) not running on the target machine. Start CEServer.exe located in your InduSoft install directory so it can listen on port 4322 for the incoming connection from Remote Management.