I have a W10 app that creates small programs in its own library. It can no longer save new versions of these. In File Explorer it shows the folder as READ ONLY. When I uncheck it and APPLY to all subfolders and files, then OK, it reverts back to READ ONLY. There has been the suggestion that this could be NORTON. I need this to have update capability. How can I see if NORTON is changing it back to READ ONLY? The folder is under my personal username Documents folder. These are Arduino IDE sketches.