Please, try to use the search function to see if you can find information about this.
Commonly, it\'s caused by a firewall on your side, either a hardware one (router) or a software one.
If you\'ve a software one, try to run it in a \"guided mode\" so it prompts for allowing connections.
Theoretically, having a router configured by default should give you no problems so I guess it has to be with software firewall (perhaps the one windows enables by default?)