Mozilla released an update in Firefox version 23+ that blocks mixed content from appearing on the browser.
Google Chrome has also released a mixed content blocker in version 30+.
- If you're using Firefox version 23+, you can resolve the issue by clicking on the shield to the left of the URL in the address bar. Please find more information about this release on Mozilla's blog post: https://blog.mozilla.org/tanvi/2013/04/10/mixed-content-blocking-enabled-in-firefox-23/.
- To view mixed content in Chrome, click on the shield icon on the right side of the address bar and select the option to Load Anyway.
- To circumvent the issue, try using secured domains (https://) for embedded content and packages. In many cases, adding an "s" to the "http://" URLs in the embed code also resolves the issue.