Microsoft plans to turn on the Windows Update spigot for Internet Explorer 9 (IE9) on Monday, April 18.

Starting then, Windows Vista and Windows 7 PCs will begin to automatically offer users the upgrade, Microsoft said Thursday.

"IE9 will not install automatically on machines," Roger Capriotti, who heads IE marketing at Microsoft, said in a blog post. "Users will have to agree to install IE9."

Windows XP users will not see the IE9 upgrade offer or be allowed to install the browser because IE9 does not work on that still-dominant operating system. The newest browser suitable for XP is 2009's IE8.

More: http://www.computerworld.com/s/article/9215845/

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