hello, for details on why this blocking mechanism was introduced in firefox please refer to [[How does content that isn't secure affect my safety?]]. <br>for a demo on how the mixed content blocking can protect you in the wild you could see the following demo/sample page by microsoft: https://ie.microsoft.com/testdrive/browser/mixedcontent/assets/woodgrove.htm if you'd like to generally turn of mixed content blocking nevertheless, enter '''about:config''' into the firefox address bar (confirm the info message in case it shows up) & search for the preference named '''security.mixed_content.block_active_content'''. double-click it and change its value to '''false'''.

See: *https://support.mozilla.org/kb/how-does-content-isnt-secure-affect-my-safety *https://developer.mozilla.org/en/Security/MixedContent