Microsoft's new Internet Explorer 9 will not be able to run on Windows XP, according to reports.

Users trying to run the Internet Explorer 9 Platform Preview will be greeted with this status message: Windows Internet Explorer Platform Preview does not support any operating system earlier than Windows Vista SP2.

IE General Manager Dean Hachamovitch said also said that Mac and Linux versions weren't currently in the company's plans, according to PC Mag.

Windows XP users have a fast, safe, reliable and private browser in Internet Explorer 8, Microsoft said.

As the Web has continued to change in everything from security to the future HTML5 applications developers are starting to build today, browsers should require the modern graphics and security infrastructure that has come along since 2001. Internet Explorer 9 requires the modern graphics and security underpinnings that have come since 2001, and is intended to be run on a modern operating system in order to build on the latest hardware and operating system innovations.

Despite being in a very early stage of development, Microsoft engineers have obscured some keys during the Professional Developers Conference in Los Angeles, names are: HTML 5, CSS, Java and acceleration for ‘hardware’.

With regard to who is called to be the new web standard, HTML 5, Microsoft has decided to be cautious. Keep in mind that the company has been pushing in recent months its own competitor to Flash, Microsoft Silverlight, and HTML 5 is called to definitively bury these plug-in, both at the same Silverlight as Adobe Flash or Sun’s JavaFX.