Internet Explorer 9 Platform Preview 7 showcases performance enhancements made to the Chakra engine. Furthermore, Canvas pixel array manipulation has been optimized for better performance in this release.
The Internet Explorer Platform Preview requires Windows 7 (x86 or x64) or Windows Vista SP2 (x86 or x64). Vista users must install Internet Explorer 8 or later to use the Platform Preview. Platform Preview 4 and later require updates to be installed on both Windows Vista and Windows 7 systems, after which your computer will require a restart. The updates support Platform Preview graphics, media, and printing functionality. The Platform Preview is designed to install these prerequisites automatically. However, if the Platform Preview encounters an error while installing the prerequisites, you can install them manually prior to installing the Platform Preview.
The platform preview ships with a pre-defined compatibility view list that is designed to mitigate website compatibility problems you may encounter while using the platform preview. Although IE9 Beta constantly updates its compatibility view list, the list consumed by the platform preview is static. To use the most up-to-date version of the compatibility view list with the Platform Preview, please follow these steps:
1. Download the latest compatibility view list and store it in: C:\Program Files\Internet Explorer Platform Preview\iecompatdata.xml
2. Change this reg key to 0: HKEY_CURRENT_USER > Software > Microsoft >Internet Explorer > BrowserEmulation > PPB > IECompatVersionLow
3. Close your platform preview window and reopen it.
The platform preview will pick up the new CV list once you restart the application.
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