Select Embedded Internet Explorer Version

I am developing a web based plug-in application that needs to be supported by the Embedded Browser given on the vSphere Client from V开发者_JAVA百科Mware

I found out that it does not matter which version of Internet Explorer I have installed on my Windows, the embedded browser used by vSphere is always the Internet Explorer version 7. (I found that out using a JavaScript + JQuery). I already tried to force the version of the used Internet Explorer with the user-agent (and similars) but with no success:

<meta http-equiv="X-UA-Compatible" content="IE=edge" >

My web application is only compatible with Internet Explorer 8 or later, so my question is how can I force the Embedded Internet Explorer to use the 8 or later version?