Displaying "Mixed Content" in Bb -- when a site is "blocked" by your browser

Displaying "Mixed Content" in Bb -- when a site is "blocked" by your browser

Sometimes Firefox and other browsers refuse to display content from "public" Web sites inside our secure Blackboard pages, as a security protection. If you can see the public URL (with "http:" in the address), you can open it successfully with a right-click, choosing to display in a new tab/window. But when the link is buried inside a test question, or on a publisher's Web site, the link won't work from inside Blackboard until you change the setting for "mixed content" in your browser.

One of the symptoms of this problem is a screen message telling you that the content you are trying to retrieve is from an "insecure" site, or that your browser has "blocked" the content. If your Firefox display includes a tiny "shield" icon on the address bar, the site is being blocked from your display.

To fix the problem, you need to change a setting in your browser on your computer, to allow "mixed content" to be displayed. This document from Google gives you directions for several browsers.

Here are the steps for Firefox:

  1. On the browser address bar, clear the current address and type the following: about:config
  2. Press enter/return. It's normal to get a warning that "This might void your warranty!" You should click "I'll be careful, I promise" to continue to the next page.
  3. In the Search box right above the list of preferences, type the word "mixed." The messy page will be reduced instantly to three or four lines of text.
  4. Look for the line that says "security.mixed_content.block_active_content." Double-click that line, to make the value in the fourth column change to "FALSE." (It's normal for the values on the other lines to be "false" too.)
  5. Click the browser's "Back" button. Go back to what you were doing and the "mixed" content will be displayed for you.
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