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That's doesn't work.  Most users I work with have local admin rights.  The occasional one that doesn't, I don't know in ADVANCE that they don't have local admin rights.  So am usually NOT on the phone, working out of e-mail.  So, I do something that raises UAC, and at the top of the screen I see that.. I get that. No problem.  But the USER doesn't know what I'm experiencing.. We're not on the phone, and the chat doesnt work during this.  So the users almost always try their own passwords.  Then I have to wait 10-15 minutes for them to stop doing that, then for the system to time out, just so I can hit CTR-ALT-DEL and run as a service. It's quite a problem, your competitors are handling this far better.