additional log on information may be required POPUP

i have a user who is getting the following pop up window with message, " additional log on information may be required".  This is a windows7  laptop connecting to the 802.11 wireless network using eap-tls.  When i look at the authentication logs on the AAA server, it shows a successful authentication.  This does not affect end user performance, instead it's just an irritating popup.

Through a google search I came across a thread related to "openDNS", however when i opened up a ticket with them they said openDNS could not be causing this issue.

I would like to know whats causing this pop-up and how to eliminate?  Please see attached photo of pop-up.

thanks!
popup.png
AVL_ITAsked:
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dbruntonCommented:
Are you running OpenDNS?  If you are then OpenDNS is part of the problem.

Have a read of this thread http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_update/additional-log-on-information-may-be-required/d5be5c1c-f9aa-4f06-943e-03d8cb305a57

There are various solutions such as changing your DNS to that of your provider or removing the Microsoft Update  KB2750841.  Have a read of the thread anyway.
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AVL_ITAuthor Commented:
thanks for the feedback.  i do not run opendns and still getting this popup.
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dbruntonCommented:
Try removing the Microsft Update anyway referenced.
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Ann CaseCommented:
I have removed the above update (KB2750841) and hid that particular update so it won't allow that update to be offered again, and it went away for a few weeks.  But the same error message is now starting to appear again, after  several more weeks of updates.  I have checked and that particular update does not appear in the list of installed updated.  I have also unchecked IPv6.  Now what do I do?
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