Affecting Flash can now be loaded only from HTTP/HTTPS

Published: | Categories: Plug-ins, Privacy & Security


Firefox 55 and later will prevent Flash content from being loaded from file, ftp or any other URL schemes except http and https. This change aims to improve security, because a different same-origin policy is applied to the file protocol, and loading Flash content from other minor protocols is usually not well-tested.

Developers can still test local Flash files by flipping the hidden plugins.http_https_only preference through about:config, but you may rather want to set up a local web server by using XAMPP for example.