Mr. Music,
I appreciate the reply, setting all the pages to the Theme "Prostar" did not help - same problem opening photos, I first did the whole website as Prostar, but then changed it back.....for your own testing I have left the JoomGallery page as Prostar and will leave it that way until Wednesday night. https://stormywebster.com/index.php/photo-gallery
It is a fresh install of Joomla, with no added security beyond my server firewall and antihacking rules (I lease my servers), From my Computer at home I am whitelisted from any firewall rules, and I checked the Comado WAF (Web Application Firewall) shows nothing in the logs for this website.
I do believe this is a Windows 10 Photo Viewer error, reading about it they say the program gets corrupt and needs to be uninstalled and reinstalled - but everyone that has downloaded photos has had problems, yet other photos open fine, it seems silly that everyone would have to uninstall and reinstall to see these photos.
NOTE: If I open the photo in a popup, and left click and choose "Save Image As" I can open it just fine with Photo Viewer, but if I use the download icon it does not work, the thumbnail preview on my windows desktop is blank, I get the error when I open it in Photo Viewer and you can't view the image, but opens in other apps.
Thanks, Bryan