User might not able to access PIX Device Manager (PDM) on Windows Vista and Windows 2008
PDM works with Java Plug-in 1.4.2, and Windows Vista/2008 Internet Explorer comes with a much later version. In order to access PFM/PDM on Vista or 2008, you must run Sun's JRE v1.4.2. You can download the JRE version from the Sun's website and downgrade your JRE version to 1.4.2. It will resolve the issue.
Note: Any version newer than Sun's JRE v1.4.2 that is not compatible with PFM/PDM.