The x64-based versions of Microsoft Windows Server 2003 and Microsoft Windows XP Professional x64 Edition include a 32-bit version and a 64-bit version of Microsoft Internet Explorer. Both versions of Internet Explorer are included to increase compatibility with existing programs and Web sites. The 32-bit version of Internet Explorer can host only native 32-bit ActiveX controls and other 32-bit Web page objects. The 64-bit version of Internet Explorer can host only native 64-bit ActiveX controls and other 64-bit Web page objects.
Both versions of Internet Explorer share the default home page, the Favorites menu, and the Temporary Internet Files folder. By default, the 32-bit version of Internet Explorer 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 To start the 64-bit version of Internet Explorer, click Start, and then click Internet Explorer (64-bit). You can also add desktop and Quick Launch icons to start the 64-bit version.
To determine the version of Internet Explorer that you are running, click About Internet Explorer on the Help menu of Internet Explorer. If you are running the 64-bit version of Internet Explorer, the About Internet Explorer window includes a 64-bit descriptor label. The 32-bit version of Internet Explorer does not show a bit-level descriptor.
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