Note: In a vSphere 5.5 environment, you must use the vSphere Web Client to upgrade the virtual hardware to version 10. You cannot edit the settings of the virtual machine by connecting directly to an ESXi host or the vCenter Server through vSphere Client that is on Hardware version 10. If you connect directly to an ESXi host using the vSphere Client and attempt to edit virtual machine settings, you see the error:
You cannot use the vSphere client to edit the settings of virtual machines of version 10 or higher. Use the vSphere Web Client to edit the settings of this virtual machine.
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