If you’re seeing a security warning about mixed content, this is the result of the default security settings in IE, and it appears when you have secure and non-secure items on a webpage.
This can happen if you have linked to a picture on your website that was not secure, for example. If you would like to disable this security warning forever, go to Tools → Internet Options and select the Security tab. Make sure the “Internet” zone is selected and then click the “Custom Level” button.
Scroll-down the list of options and set the “Display mixed content” setting from “Prompt” to “Enable.” Then click the OK button twice to finalize your settings. You may want to turn the warning off for all the zones.