Microsoft: IE9 won't run on XP

At a press conference at the Mix10 event, Microsoft doesn't say when the new browser will ship, but when it does, it won't run on Windows XP.

Ina Fried Former Staff writer, CNET News
During her years at CNET News, Ina Fried changed beats several times, changed genders once, and covered both of the Pirates of Silicon Valley.
Ina Fried

CNET News Poll

Is IE9 enough?
Many have switched from IE over the years. Will Microsoft's IE9 preview draw you back into the fold?

Yes, Microsoft cares about the Web again.
Only if IE9 delivers on the promises.
Over my dead body.
Come back? I never left.

View results

LAS VEGAS--Microsoft won't say just when it expects to ship Internet Explorer 9, but whenever it does, it won't be running on Windows XP.

"Building a modern browser requires a modern operating system," Internet Explorer General Manager Dean Hachamovitch said at a press conference at the Mix10 event.

Microsoftunveiled a "platform preview" of IE9 earlier on Monday. That early version, which contains the Chakra engine, but not the full user interface (or even a back button) requires Vista Service Pack 2 or later.

One of the areas of focus was on the ability to play HTML 5 video. As for which video codecs Microsoft will support, Hachamovitch would only commit to H.264.