In the long-term, we encourage developers to move away from using FTP in their extensions. We will also evaluate whether new features should be added to help you maintain file transfer functionality. If you maintain an extension that uses FTP, please test it on Nightly (or on any current version of Firefox by flipping the preference to false) and file a bug if you notice any issues. We want to help developers address these breakages as best as we can while this change is on Nightly. If the pandemic situation has not improved by July 28 (the expected release date for Firefox 79), there may be further delays.Īdd-ons that use FTP may experience breakage on Nightly but will continue to work as usual on the Beta and release channels. To mitigate the risk of potentially causing breakages during the COVID-19 pandemic, FTP will not be disabled from the Firefox release channel until at least July 2020. After FTP is disabled in Firefox, people can still use it to download resources if they really want to, but the protocol will be handled by whatever external application is supported on their platform.įTP was disabled on the Firefox Nightly pre-release channel on April 9. Now, we have decided to remove it because it is an infrequently used and insecure protocol.

It predates the Web and was not designed with security in mind. FTP is a protocol to transfer files from one host to another. The Firefox platform development team recently announced plans to first disable, and then remove the implementation for built-in FTP from the browser.

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