I had a client that wanted the vSphere client to connect to a specific vCenter, use the logged in credentials and ignore cert warnings. This is how to modify the shortcut.

In the properties for the shortcut go to the end of the target and add –passthroughAuth –i –s <vCenter name or ip>

-i ignores any cert warnings, -s is the server. You could also not use passthroughAuth and use –u <username> -p <password> that would be less secure though.

This will launch the client and connect to the vcenter with no interaction from the user.