How to view your Virtual Machines in the Web Client Console.
Access vSphere Web Client
On the Login page choose the option at the foot of the page, Download the Client Integration Plug-In
Open Virtual Machine Summary Tab
Choose the Virtual Machine Summary tab and then Click Launch Console.
Console still fails to open
You will still see that the Console fails to open. This is because you need the browser Internet Explorer to be in Compatabiliyt mode for the Site.
Add Site to Compatability Mode
Choose Options and then Compatability View Settings.
Click add to add the localhost to the sites.
Now you will see the Console Plug In will load.