Follow the steps, and you should be good in no time. If you run a Linksys router, and can't manage to login to the router, it's an issue involving an update. If you run into this issue, simply push in the reset button on the back of the router for 30+ seconds to reset it to the factory defaults. Then you should be able to login to it. Goodluck.
If you don't have a router, it's most likely a complication with a firewall. Disable the firewall, then try again.