The VMware Enhanced Authentication Plug-in provides Integrated Windows Authentication and Windows-based smart card functionality.
In this vSphere 6.5 release, the VMware Enhanced Authentication Plug-in replaces the Client Integration Plug-in from vSphere 6.0 releases and earlier. The Enhanced Authentication Plug-in provides Integrated Windows Authentication and Windows-based smart card functionality, which are the only two features carried over from the previous Client Integration Plug-in. The Enhanced Authentication Plug-in can function seamlessly if you already have the Client Integration Plug-in installed on your system from a vSphere release prior to 6.5. There are no conflicts if both plug-ins are installed.
If you install the plug-in from an Internet Explorer browser, you must first disable Protected Mode and enable pop-up windows on your Web browser. Internet Explorer identifies the plug-in as being on the Internet instead of on the local intranet. In such cases, the plug-in is not installed correctly because Protected Mode is enabled for the Internet.
On the External Protocol Request dialog, click Launch Application to run the Enhanced Authentication Plug-in.