While McAfee says : Am I protected NO --> You would be displayed with an error message beneath the Fix button, could you please provide us with that.
If possible attach a screen shot of your security center (While it says not proected/Without clicking on FIX).
Also, do you have any other security software installed in the computer ?
Please run McAfee virtual technician from http://mvt.mcafee.com and provide us with the session id that you receive at the end.
McAfee Online Community Moderator