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I sometimes close Firefox while I have downloads in progress that do not support resuming. Then when I open Firefox again I have to go to the original download location and start from scratch. It would be useful if there was a way to get a warning from Firefox before I close the application when downloads are in progress. Anyone know of a way to configure it to do this?

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Try to set the value of at Firefox about:config. It can be set to these values. To get a warining you should set it to 2.


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Comment by @Precaq: Just for the record and non-english folks - it's not "Bahvior" but "Behavior" so the value should be – Ivo Flipse Jan 10 '11 at 18:31
Sharp @Precaq! I edited it for you :-) – Ivo Flipse Jan 10 '11 at 18:33

I'm using DownThemAll! addon and even if I close Firefox, the download window remains open as a separate window. This prevents me from stopping my unresumable downloads accidentally.

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+1 nice, didn´t know about that addon. going to try it ;-) thanks – Diskilla Sep 28 '10 at 16:58
I've been using it for a long time and I'm quite satisfied. It has nice features. Trust me, you won't regret ;) – Mehper C. Palavuzlar Sep 28 '10 at 18:00
This doesn't answer the question. Does it??? It just talking abt the addon which don't fix the question/problem. – Millisami Feb 16 '13 at 20:06
@Millisami: Using this addon fixes the problem. Even if you close Firefox, the DTA download window remains open as a separate window. Got it? – Mehper C. Palavuzlar Feb 17 '13 at 14:36

You may also want to consider to set browser.warnOnQuit and browser.showQuitWarning in Firefox's about:config to true to get a warning when closing the browser, not only when a download is in progress. This might save you some headaches when you accidentially try to close Firefox and were typing text into some input boxes for example. See

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Actually, doesn't exist anymore; it has been removed in recent FF versions.

One (slightly clunky) workaround is to go to Downloads -> Show all downloads when you're downloading something big you may forget about. It will show a new download window, independent from FF. But you have to remember beforehand.

The missing preference is just screaming for a bug report, though.

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