Internet Explorer still uses the color scheme based around RGB and not CMYK.  When an image is edited in Photoshop or similar photo editor, the user can use the color scheme CMYK. When a photo uses CMYK, it will not display in Internet Explorer. To have the image display, the user needs to change the colors with the scheme RGB, and reupload the image on the CMS.

Note: This editing needs to be complete in a third party photo editor, such as Photoshop.  Since Photoshop is a third party program, and editing images is outside Support scope, Support cannot assist you with any modification to your images to make them work properly in Internet Explorer.