Well in various part of this world especially in Asian Countries people are still using Internet Explorer and this is common problem - internet explorer cannot open the internet site.
But do you know that old version of Internet Explorer is really slow while surfing the internet. There are many other web browser which can give you the experience of fast downloading even in that speed and you will never see this message again ... internet explorer cannot open the internet site.
If you want to overcome this problem than start using mozilla firefox which I also use and this one is really awesome with their various add ons and plugins. I am giving you a link through which you can easily download that software.
Now enjoy the internet and forget the problem like ... internet explorer cannot open the internet site.