This usually means that your computer has lost its association for http links. Here are a couple of options to try and fix this.
For Windows XP and earlier:
- Run Windows Explorer (*not* Internet Explorer)
- Click "Tools > Folder options" on the menu
- Click the "File types" tab
- Scroll down and highlight URL:Hyper Text Transfer Protocol (the extension will say (NONE) ).
- Click the "Advanced" button, highlight "open" in the list and clickthe "Edit" button.
- Set Explorer as the application used to perform action. Here are the settings which seem to work:
- Application used to perform action is: "C:\Program Files\Internet Explorer\iexplore.exe" -nohome
- Use DDE is checked
- DDE message is: "%1",,-1,0,,,,
- Application is: IExplore
- Topic is: WWW_OpenURL
For Windows Vista and Windows 7:
- Click Start on the Vista taskbar, then open the control panel
- Click on "Programs"
- Click on "Default programs"
- Click on "Associate a file type or protocol w/ a program" (this can take a while to come up)
- Scroll down to HTTP (it will be near the bottom of the list)
- Edit that item and make sure there is a browser (like IE or Firefox) selected
Another option that should work in any version of Windows:
- Run Internet Explorer
- Choose Tools from the menu
- Then Internet Options
- Then the Programs tab
- Check "Internet Explorer should check to see whether it's the default"
- Click OK and exit from Explorer
- Restart Explorer and when it asks if it should be the default tell it yes