Won't warn me when closing multiple tabs - even though it is selected in preferences.

When I close Firefox, it used to give me the option of saving my tabs. It doesn't do that anymore, even though I have that option selected under Preferences.

You can set the warn prefs on the about:config page to true via the right-click context menu or toggle with a double left-click.
* browser.showQuitWarning, see http://blog.zpao.com/post/3174360617/about-that-quit-dialog
* browser.tabs.warnOnClose, see http://kb.mozillazine.org/About%3Aconfig_entries
* browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
* browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website. 
If you see a warning then you can confirm that you want to access that page. 
You can use History > Restore Previous Session to get back the previous session. 
There is also a "Restore Previous Session" button on the default about:home Home page.
Another possibility is to use:
*[http://kb.mozillazine.org/Menu_differences Firefox > Preferences] > General > Startup: "When Firefox Starts": "Show my windows and tabs from last time"

Similar Messages

Firefox warns always when closing multiple tabs, even when respective setting is cleared

Firefox warns always when closing multiple tabs, even when respective setting is cleared. "browser.tabs.warnOnClose" (and "browser.tabs.warnOnCloseOtherTabs" too) are in "false" state. The same behaviour after reset. Firefox 32.0.3, OS - Linux Mint 17.

Start Firefox in [[Safe Mode|Safe Mode]] to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
*Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
*Do NOT click the Reset button on the Safe Mode start window
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Firefox is not warning when closing multiple tabs, even though it is set to warn me in preferences!

Firefox is not warning when closing multiple tabs, even though it is set to warn me in preferences! Unchecking and rechecking the box does not help, it's as if Firefox is ignoring the option to warn when closing multiple tabs.

You can set the warn prefs on the about:config page to true via the right-click context menu or toggle with a double left-click.
* browser.showQuitWarning, see http://blog.zpao.com/post/3174360617/about-that-quit-dialog
* browser.tabs.warnOnClose, see http://kb.mozillazine.org/About%3Aconfig_entries
* browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
* browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website. 
If you see a warning then you can confirm that you want to access that page. 
You can use History > Restore Previous Session to get back the previous session. 
There is also a "Restore Previous Session" button on the default about:home Home page.
Another possibility is to use:
*[http://kb.mozillazine.org/Menu_differences Firefox > Preferences] > General > Startup: "When Firefox Starts": "Show my windows and tabs from last time"

Why am I not warned when closing multiple tabs even though it is set in the preferences to do so ... using Version 4 on a MAC

I have set the preferences to warn me when I close the browser window with multiple tabs open. No warning is given and the multiple tabs have to be reproduced every time I open. In previous versions I would be asked if I wanted to SAVE the tabs for the next session ... which I do. And, when opening Firefox the next time, the tabs would all be there.

You can use "History > Restore Previous Session" to get back the previous session.
There is also a "Restore Previous Session" button on the default about:home Home page.
Another possibility is to use:
*Firefox > Preferences > General > Startup: "When Firefox Starts": "Show my windows and tabs from last time"
You can set the warn prefs on the about:config page to true via the right-click context menu or toggle with a double left-click.
* browser.showQuitWarning, see http://blog.zpao.com/post/3174360617/about-that-quit-dialog
* browser.tabs.warnOnClose, see http://kb.mozillazine.org/About%3Aconfig_entries
* browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
* browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website. 
If you see a warning then you can confirm that you want to access that page.

Even after enabling "Warn me when closing multiple tabs", firefox closes without any warning even if multiple tabs are open.

I recently installed Firefox 4.0 and in the options, under the section "Tabs", I have enabled "Warn me when closing multiple tabs". But if I have multiple tabs opened with websites loaded in them, and then try to close the browser, it simply closes. No warnings are shown (which was there in previous versions). Couple of times I clicked on the close button of browser and then realized that I had some important sites opened in different tabs, which I lost as it didn't warn me. Can you please let me know whether this is a bug or a mistake from my side?

I'm sure you are using Private Browsing mode in Firefox 4. I have also the same problem and I tried to uncheck this option after many times accessing about:config\browser.warnOnquit. And it's wonderful, the warning cameback. I think it's a bug about Private Browsing mode. Hope Mozilla's Developers will fix it.

I checked the box that says "warn me when closing multiple tabs" but it doesn't warn me at all

I checked the box under Option > Tabs that says "Warn me when closing multiple tabs" but whenever I would accidentally close firefox with multiple tabs open, it doesn't warn me at all! It would just close everything. I have tried to check and uncheck it a lot of times but it still not working.

You can reset the warn prefs on the about:config page via the right-click context menu.
browser.tabs.warnOnClose , see http://kb.mozillazine.org/About%3Aconfig_entries
browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
In Firefox 3 you do not get the 'Save & Quit' pop-up dialog if you choose Tools > Options > General > Startup: "When Firefox Starts": "Show my windows and tabs from last time". 
If that option is selected then your pages will already be reopened the next time. 
To get that pop-up dialog you have to select one of the other choices (Show my home page, Show a blank page).

FF 4.0.1 no longer Warn me when closing multiple tabs or even restore them!

after upgrading to 4.0.1 ff Warn me when closing multiple tabs or even restore them although i close the firefox from (Firefox -> Exit) and the (Warn me when closing multiple tabs) check is enabled.

You can set the warn prefs on the about:config page to true via the right-click context menu or toggle the value with a double left-click.
* browser.showQuitWarning, see http://blog.zpao.com/post/3174360617/about-that-quit-dialog
* browser.tabs.warnOnClose, see http://kb.mozillazine.org/About%3Aconfig_entries
* browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
* browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website. 
If you see a warning then you can confirm that you want to access that page. 
*Use the Filter bar at to top of the about:config page to locate a preference more easily.
*Preferences that have been modified show as bold(user set).
*Preferences can be reset to the default or changed via the right-click context menu.

Tools,Options, "warn me when closing multiple tabs' is not working.

Windows 7; Firefox 5.0.1
Tools, Options, "Warn me when closing multiple tabs" is selected. Firefox closes unexpectedly without providing a warning.

Ahh, yes, I remember that warning as well. Apparently the check box has worked as I have forgotten about that additional warning. Anyhow, I agree - the wording does not distinguish well between the two scenarios. Supplying an option for both would be great.
Thanks for your reply.

"Warn me when closing multiple tabs" doesn't work

Under Tools > Options > Tabs, "Warn me when closing multiple tabs" is selected. Also, in about:config, browser.tabs.warnOnClose is set to "true". I always have multiple tabs open. However, sometimes my hand slips or the mouse falls off the table and Firefox closes without any warning.

I had this problem too a few monthes ago,
sorry don't remember how I solved the problem...
BUT a general TIP is that you sometimes should fully reinstall Firefox from the scratch.
I mean save your bookmarks (json), have a list of your add-ons,
preferably with their url too, and one for your plugins too, everything safe in a folder in your documents...
And only then "shoot away" Firefox from your computer, profile included...
make a full cleaning of everything belonging to Firefox.
(with Glary utilitises, CC cleaner or any soft alike)
Reinstall everything with the latest Firefox.exe !
This especially if you're used to ( as I am) try new adds, make changes
in about:config... and so on.
I guess it comes because with the "normal way of updating", which I suppose is the case for most people, just to download the updates, Firefox, after a few monthes,
starts to mess a little things around.
And even "Speedyfox" nor defragmentation can't help that much...
Personnaly, I don't like so much to do it, but like that, usually my Firefox works fast and well.
Another solution is to use "FEBE" add-on...
I wish this "general tip" will help some of you, or at least give some indications,
on how you want to solve some Firefox problems :-)
Note : depending on how many add-ons you have, this may take ~30minutes up to 3 hours (:-(), if you have never saved anything before (list from your adds).
PS Me ? I save everything quiet often, because I once lost, years ago, everything concerning Firefox because I did a main mistake (lost all my bookmarks)... and told myself : Not Twice... :-)
Happy Christmas ! :-)

Warn me when closing multiple tabs is not checked, but I still receive the warning when closing multiple tabs

After installing Firefox 16.0.1, I always get a warning whenever I close multiple tabs, even though there is no check mark against the option, "Warn me when closing multiple tabs".

This a recent bug problem. In other versions do no exist. Some users like warnings, but others not, like me.

Firefox 11 does not warn me when closing multiple tabs. How do I do this?

(Tools/options/tabs tab/ warn me when closing multiple tabs) How can I get this to work so I can set it once and keep the warning in different sessions.
(Other replies seem to indicate it has to be done through config for each session)
Thanks Alf
OS XP Pro sp3
Firefox v11

Hi AlfLinus,
You should only have to set it once. Does the actual checkbox disappear when you open a new session? You should look at the article [[Preferences are not saved]]. Firefox might be having trouble writing to your pref.js file.
Hopefully this helps!

If you check the don't show this again box when closing multiple tabs, how do you get it to warn you when closing multiple tabs, or to save previous tabs? Checking the warn me when closing multiple tabs box under tools/tabs does not work to solve this?

I accidentally checked the do not ask me again box when closing multiple tabs. Now I no longer get a warning when closing multiple tabs, and it saves my previous session. I have tried checking and un-checking the warn me box under tools which has not worked. If I open a second window and try to close multiple tabs it will warn me but not on the first window.

You can reset the warn prefs on the about:config page via the right-click context menu.
browser.tabs.warnOnClose , see http://kb.mozillazine.org/About%3Aconfig_entries
browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website. 
If you see a warning then you can confirm that you want to access that page.

Firefox 17.0 doesn't warn me when closing multiple tabs any more

hi all
Having updated to Firefox 17.0 (from 16.0.2), for some reason I don't get warned when closing multiple tabs any more.
I've confirmed the relevant options are selected and am 100% certain this was working fine before updating Firefox today.
I've replicated the problem on my vista 32bit platform and on XP 32 bit too.
I also looked at the changelog for Firefox 17 but can't see any explanation for this change in behaviour, although I wonder whether this might have something to do with it "772319 No option to disable the "Close other tabs" prompt."
As I use Tab Mix Plus (add-on), I've also checked Firefox in safemode and have found the native tab warnings not working, so have concluded it's an issue with Firefox (rather than something to do with an extension).
I've checked "about:config" and "browser.tabs.warnOnClose" is set to true, as is "browser.tabs.warnOnCloseOtherTabs".
Any help would be appreciated.
Thanks,
Gary

I have this problem too. i have tab mix plus but in my case browser.tabs.warnOnCloseOtherTabs and browser.tabs.warnOnClose are both set to true but i still get no warnings which sucks because i accidently click on close alot.

Why wont Firefox 5 warn me when closing multiple tabs? The box in settings is checked.

After I downloaded Firefox 5 it no longer warns me when I'm closing multiple tabs. The box is checked in settings for tabs but it still wont do it. This feature worked fine in Firefox 4. Can this be a glitch?

@NoriMori and auscompgeek
We are not talking about saving tabs when closing; we're talking about the warning "You are about to close X tabs" that usually shows up when you press the browser's close button. Now when I press the button, everything closes; no warning. I'm fortunate that Firefox does have a "restore previous session" button when you reopen Firefox.

Firefox 23.0 doesn't warn me when closing multiple tabs, unless only one window is open.

I've selected the option for Firefox 23.0 to warn me before I try closing windows with multiple tabs. If only one window is open and that window has multiple tabs, I receive the warning. If more than one window is open and multiple tabs are open in any or all of them, the warning doesn't appear until I get to the final open window.

hello, the message is only there by design if you close the whole browser with still a few tabs open in it (and also only when you choose not to store browser history). if you want to restore one of multiple windows closed during a session you can do so from the history menu or the keyboard shortcut ctrl+shift+N.

Won't warn me when closing multiple tabs - even though it is selected in preferences.

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