How to turn off the "Do you want to display the nonsecure items" browser popup ?

Step 1: In Internet Explorer, navigate to: Tools > Internet Options

Step 2: Select the "Security" tab and click on the "Custom Level" button.

Step 3: Scroll down until you see the option: "Display mixed content" under the "Miscellaneous section. Select the option to "Enable"

Step 4: Click Ok, Then "Yes" to save the changes.