<p>Windows 8 and Windows 10 now supports the EXIF Orientation flag. The File Explorer in Windows 10 now auto-rotates the images on the fly in the thumbnail view. The problem is, most users who are used to the way the pictures were displayed in Windows 7 (or any other older versions of Windows) will be caught by surprise when they upload their rotated pictures to websites like eBay or Amazon. The pictures might look "correct" in Windows 10, but when uploaded they are still in their original orientation. This is because most websites don't support EXIF. You cannot fix this problem using the "Rotate Left" or "Rotate Right" options that comes with File Explorer.
