When I click on the reveal password window pop up and shows username and then you must enter password. Fine then new window open and ask for "Administrator name and password to allow this, I enter my Admin username and password which are the same as the login username and password but it will not Allow it, so I have to click on the "Deny" button.
Does OS X Yosmite have a different username and password?
Does OS X Yosmite have a different username and password?