Windows 7 64-bit comes with both the 32-bit and 64-bit versions of Internet Explorer.
By default, IE8 32-bit automatically runs when you start the browser from any one of the following locations:
- The Quick Launch toolbar
- The desktop
- The Start menu
- A hyperlink or a file type that is associated with Internet Explorer.
The main difference between the two is that IE8 64-bit only runs native 64-bit ActiveX controls, and IE8 32-bit only runs native 32-bit ActiveX controls. This means that plugins like Flash that are 32-bit will only
work in the 32-bit Internet Explorer.
To see if you are running the 64-bit version open Internet Explorer and click on help. The version running will appear on the version line.