Firefox 88 update has disabled File Transfer Protocol (FTP) support completely from the browser. The handling of clicking on FTP links from within Firefox will soon be passed to other applications, as Mozilla will rip out Firefox’s FTP implementation.
Mozilla announced its intention to disable support for the FTP protocol last year, but the plan was delayed because of the global health crisis.
By February, FTP was disabled in Firefox’s nightly channel and it is currently also disabled in the Beta channel. For general release, FTP will be disabled in Firefox 88 released on April 19.
One of the oldest network protocols still in use, FTP handles file transfers between a server to a client, but it’s no longer considered a secure way of uploading and downloading resources, and there are no good reasons to prefer it over HTTPS.
After disabling FTP functionality, the code will be removed in Firefox 90. Google removed FTP support with the release of Chrome 88 in January.