I recently noticed that when I try to view a list of PDF documents in my file folders using the 'Detail' view , their 'type' is shown as 'Norton HTML Documents'. (Thankfully, when I open one of the documents, it shows it is still a PDF.)
Why is this occurring? How can I undo this? I suspect (and hope) there is a setting somewhere that I can change to remove this "feature".
I found a solution to my problem. A few weeks ago I had added the "Secure Browser" from the "My Norton" section based on its promise to reduce ads. Immediately after I downloaded it, I realized most of my pop-up ads were from Norton trying to sell me functions that I used to get as part of their basic package, so I never activated it. On a hunch, I tried removing the Browser program from my computer and it cleared up the above "Norton HTML Document" problem.
Why Norton felt changing the name of PDFs was necessary I do not know - was it just placing ads? Anyway, the problem has been solved.