Scroll down to check "Mixed code (sandboxed vs. trusted) security verification" is set as "Disable verification (not recommended)".
Note: Without this setting, the webconsole won't work properly and the cmd prompt won't be brought up after the client tool is launched.
3: To make sure the DNS is setup properly on the machine. It is necessary to be able to resolve the host name without the suffix. So if your fully qualified domain name is free.mycomputer.com, you need to able to ping just the hostname: free.
You can configure its DNS suffix list via Advanced TCP/IP Settings via Local Area Connection Properties of Local Area Connection Status.