The 64-bit versions of Windows 7 and Vista come with both 32- and 64-bit variations of Internet Explorer. But the operating systems default to using the 32-bit brower.

Microsoft has sent a statement to Neowin about how Internet Explorer 10 will run in the 64-bit and the 32-bit version of Windows 8, in both the desktop and "Modern" user interfaces.

In a redesigned advance bulletin for Patch Tuesday, Microsoft said it will fix flaws in Windows Vista, IE 7, Office and other programs. Four updates will address critical problems.