It's possible that you might need to use a fully qualified name if your network requires it. I've worked within some environments where that was necessary. It should look something like:
Check (My Computer --> Properties --> Computer name, domain, and workgroup settings --> Domain:) for your fully-qualified name.
try ipconfig -all command and check the host name and try to ping the same host name to return IP address.
Hope this is n/w issue and not author install issue.