As you can see from the attached images, email headers are not showing in the emails list pane. also the Reading pane is showing the raw email content, headers and encrypted message.
other email clients are showing the same email correctly.
-uninstall/re-install of Office 2010, 2013, 2016 none has worked, all of them show the same problem. even cleaned Registry after the uninstall.
-repair pst, create a new pst file, all have the same issue.
-disabled McAfee , removed McAfee, installed AVG nothing changed.
none of the above worked.
the conclusion I came to is, there might be a setting somewhere that is telling outlook not to parse the email, and only to view a raw message .. but I searched many forums for a solution with no luck.
the office is installed on windows 10.