The healthiest and the easiest way to end FTP session in Google Chrome might be only using Chrome Incognito mode for FTP processes, then closing it when finished those FTP processes.
You can launch incognito by pressing Ctrl + Shift + N, (or) Settings -> New incognito Window, (or) right mouse-click on a link from a regular Chrome session, and select “open link in incognito window”.
Technically ending a FTP session in Google Chrome is complicated or maybe impossible. It only lets you keep connected to FTP server during a single browser session. In most of other browsers this situation is controllable. For example; You can resume to download a file from a FTP server even you have rebooted the system in Firefox FTP session.
Waiting a while to end the FTP session is not also a solution, because cache files are not deleted when Chrome returns ERR_TIMED_OUT. Refreshing page brings credentials of the FTP session back.
Unfortunatelly, there is no suitable solution yet for Google Chrome that I know.
1I'm firmly in the "never use a browser for ftp" camp. CoreFtp for example is much easier to use, allows storage of multiple access names, etc etc – Carl Witthoft – 2017-03-08T16:26:10.453
What happens if you enter those different credentials right with the URL? Chrome can handle this like any other browser.
ftp://username:password@ftpserver/folder
– nixda – 2013-10-29T12:19:23.760Nothing. They just become removed from the URL (as usual), and the page is loaded using the old session. In fact, this should be considered a Chrome bug. – Áxel Costas Pena – 2013-10-29T12:21:08.713
Hm, does this happen with different browsers too? Second try: What happens if you clear all password data and history (CTRL+SHIFT+DEL?) – nixda – 2013-10-29T12:24:37.467
Firefox successfully clears current session if you enter new credentials via URL, even if they are wrong (first notifies the 503 code, then when you reload poage it asks for new credentials). – Áxel Costas Pena – 2013-10-29T16:10:52.177
If you take a look at the checkboxes available in the clear user data, it's obvious that none will clear an FTP session. And as expected, I checked all, and the session was not cleared. – Áxel Costas Pena – 2013-10-29T16:11:51.523