Hi changugaurav24, Thank you for contacting support. This is what I found for more information. The security.mixed_content.block_active_content set to false does block all sites. It is possible to set '''security.warn_viewing_mixed''' to true to just get warned instead? Other workarounds and information: *[https://developer.mozilla.org/en-US/docs/Security/MixedContent] *[http://stackoverflow.com/questions/18251128/why-am-i-suddenly-getting-a-blocked-loading-mixed-active-content-issue-in-fire]

See: *[https://bugzilla.mozilla.org/show_bug.cgi?id=873349 bug 873349] - Add a whitelist for mixed content blocking You can vote to show your interest in getting the bug resolved: https://bugzilla.mozilla.org/page.cgi?id=voting.html.