I am having trouble opening pdf on Explorer site using either X or XI?

i thought tried site , support site.  nada.  still problem.  tried reinstalling, explorer settings, older versions, etc.  running win7.  got ideas?  being more specific, can not open pdf when pulling docs off website.  see small monitor symbol in upper left corner.  try refresh, nada.  ideas? 

see if in here helps: http://helpx.adobe.com/acrobat/kb/cant-view-pdf-web.html

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