I recently upgraded to windows 10. All the pictures that were on my computer before then I am not able to view. Open option "photos" states "it looks like we don\’t support this file format" and "windows photo viewer" says "cant open this picture because either photo viewer doesn\’t support this file format, or you don\’t have the latest updates to photo viewer". Any pictures I download off my phone after the update I am able to view. It is just those that were on the computer before the update. Please help!
Have you had any luck with this post, I have the same issue and I am extremely frustrated with Windows 10.