Before I upgraded my laptop’s hard drive to SSD, I couldn’t keep a lot of tabs open on Firefox because it takes up huge amount of memory and slows down my laptop to a crawl. So what I normally do is note down the interesting sites on a text file and will visit them again when I have the time. Now with SSD drive, everything became so fast and I no longer need to close the tabs. Every time I exit Firefox 3, I simply click on the Save and Quit button when I am prompted “Do you want Firefox to save your tabs for the next time it starts?” The next time I launch Firefox 3, all tabs are automatically opened.
Firefox 4 final has just been released and in fact I downloaded and installed it a day earlier because the setup installer is already on Mozilla’s server. Updating from Firefox 3 to Firefox 4 is very easy. All you need to do is run the Firefox 4 installation file (Firefox Setup 4.0.exe) and it will automatically upgrade as there is no need to uninstall Firefox 3 first. After upgrading, I immediately noticed that Firefox 4 no longer prompts to save the tabs on exit and it only warns me “You are about to close X tabs. Are you sure you want to continue?” There is only a checkbox to warn me when I attempt to close multiple tabs.

Fortunately the saving of tabs on quitting Firefox 4 hasn’t been removed and it has been disabled by default. There is no need to use add-on or extension for this feature. Not sure why the Firefox developers decided on this but here is how to enable saving of tabs when closing Firefox.
1. Type about:config at the address bar and hit enter.
2. Click the “I’ll be careful, I promise!” button
3. At the filter bar, type browser.showQuitWarning and hit enter.
4. You can either double click on it to change the value from false to true, or right click on it and select Toggle.

This change takes effect immediately without restarting Firefox. Now try closing Firefox 4 with multiple tabs opened and you’ll be prompted to save the tabs.

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I can’t get this to work on FireFox 12.0… Anyone else who has had better luck with that?
I love techies with great workable tips! Merci bien!
Great. Thanks.
thank mate
Just what I was searching for! Thanxx!
Thanxxxxxxxxxx
Thanks for the tip, it worked perfectly on FF 8.0.1
Doesn’t seem to work with Firefox 8.0
it worked thank you :)
thank you so muchhhhh <#####
Thanks a lot
It used to work but not anymore! The value says True, and still I get a warning that I’m about to close tabs, not the option to save them. It worked fine until just a few moments ago, when it just happened to stop working. How do I fix this?
…just wanted to add to the comment I posted that I am using Firefox version 6 and this procedure still works …thanks again!
Thanks,
It worked perfectly just as you said it would …thanks for the clear pictured sample instructions …Perfect!
Thank you so much worked perfectly. Instructions were simple and straight forward!
Thanks very much it worked and your instructions were quite straight forward!
Thanks i get help from your article
Thank you soooooooo much!!!
THANK YOU SO MUCH!!!!! XOXOXOX
It works! Thank you!
Excellent tip. Now I am reconsidering to use Mozilla as my default browser. Congratulations!!!!!
Thank you
thanks i follow steps and it’s solved
Also works with Firefox 5. Thanks so much.
thanx man…strait forward help…
thnaks a loTTT…don’t understand why the Firefox team decided to throw it out…
Thank you a million! It works great with Firefox 5 as well!
hi
after doing this also i could not save my tabs can i know the reason
very easy and very cool !!!
Thanxxx a bunch
thanks man i thought that there was no way to get the save buttom back unless u go back to number 3, i checked the options tab for number4 but couldn’t find a way to make it save my tabs! this was VERY EASY TO DO!! :) THANK YOU SO MUCH
wow, really thx. really lazy to bookmark all those links.
Youre the best!! Thank you so much
thanks mate. nice tutorial. easy and fast.
Brilliant, thanks a lot.
love it! thanks!
Thanks for sharing…
nice post :) thnx
thanks a lot, man
nice post, really helped. I must say thank you :D
thx a lot, man. you are my “idol of the day®”
Way easy – thx
thanks :)
Thanks, I was missing this feature very much!
Now I just need to find out how to make address bar show AGAIN all the urls redirectioning instead of this “about:blank” stupid feature
thank you. It is helpful really.
Works great! Thanks :)
Thank you so much, it finally worked!
THANK YOU SO MUCH!!!! IT WORKED FOR ME!!!!! ;))))
Nice!! it worked great!! thanks Raymond.
Thanks a lot works great!!!
You’re a god!
Take care man, some day you’ll save one or many lives…
(Y)
Oh, It was very valuable thanks allot :))
thank you!!!
You are a lifesaver
Thanks you so much =)
I was afraid to fiddle with it after the pop-up warning but I trusted your advice, clicked on “I’ll be careful”, followed the step, and it worked GREAT! Thanks so much!
thanks a lot..:)
you are my savior man…thanx a lot…
Thx, Raymond. And i guess sysulzh is right. You can restore the previous session from the history menu.
If you forget things quite often or just like being asked every time, this is the way to go.
But, what i really think as lame is that “Firefox” button. It added a useless step on selecting options. You can roll back to Firefox 3 style, by right clicking an “empty” space in the browser and click “Menu Bar”.
thankx it really workx
Great tip…thanks!
Well, you could do that but it seems no need in FF 4.
FF4 will always save the last sessions automatically. You can restore the last sessions (tabs) from menu History->Restore Previous Session.
oh thank you thank you thank you! I lost them all because I didn’t have time to search how to do this last night, but I didn’t want the internet on all night. I was not a happy camper – so thank you! you made my morning!
Works beautifully as you have shown in your instructions. The screen shots were a great help.
Perhaps you make it even better by telling us to open another Firefox window and then flip back and forth to read your instructions. And do not forget to close the second FF browser to activate.
Thanks a bunch
Thank you SO much for this! Wish I’d read it before uninstalling and reinstalling Firefox…several times.
This doesn’t work.
I have FF4.01 and when I quit it STILL asks to close the tabs, and doesn’t restore them upon startup.
I have to restore from the ‘recently closed windows.
Not quite, eh?
Rgds
Eliot
Hi, I did the above: ” 1. Type about:config at the address bar and hit enter.
2. Click the “I’ll be careful, I promise!” button
3. At the filter bar, type browser.showQuitWarning and hit enter.
4. You can either double click on it to change the value from false to true, or right click on it and select Toggle.”
But it doesn’t ask me if I want to save my tabs, it just closes – and saves the tabs, but I would like to have it question me if I want to save the tabs.
Any suggestions?
Raul Herrera
Lame that they disabled it by default, it’s like the best browser feature there is.
you made it so simple AND easy to understand with your screen shots. Well done! Thank you!
Have a great day, Raymond!
Oh gosh you made my day. Thanks a lot! <3
thank you , it’s important for me
thanks man, at first i looked at the official site and it was absolutely useless. then i found you site and solved the problem in 10 seconds
never posted on a forum before. this had prompted me to.
Thanks :) very easy to understand and works great :) thanks :)
I really needed this, thanks a lot ! :)
Excellent, it was wery simple and useful!
Thanks a lot!
Thanks!
Perfect. :) I really missed this feature since updating. I’m glad they didn’t totally get rid of it. Thanks for the walk-through!
Straightforward and simple. Thanks!
huzzzah!
strange decision by the developers to change the option, but thanks for the tutorial!
Thank you very much……
tbh silly idea to change this setting by mozilla, Its pretty obvious that people want to keep there tabs history
an own goal I think but thanks for this solution my friend
doesn’t work for me :(
Set that value, restarted FF, restarted PC, still no Save-button.
Any idea? May it interfere with NoScript or another plugin?
Thanks, Frank
hey thanks a lot
Thank you very much!
Thanks a lot!
Excellent directions. Thank you very much.
thanks!!!
very nice, this is exactly what i was looking for. thank you, man.
Finally I can save my tabs !
Thnx .. it works
i am glad, too. very clear instructions!!!
Thanks! That was a very easy solution to a problem that I found totally frustrating! I was planning to switch back to the old Firefox already…
This was starting to annoy me!
Thanks very much, very helpful. Don’t know why the developers disabled this by default.
Thanks.
I was wondering where this had disappeared to!
I’m really glad I found your page. Very helpful and clearly presented. Thank you.
Thank you!!!! Such a great feature. Strange they got rid of this default.
Thank a lot !!
Thank you sir. This helped a lot!
tq very much…its work
Thank you so much!
Stupid Tab Mix Plus messed up my setting.
Thanks. This is a feature I use a lot.
Thanks a lot !
Thanks a ton!!!
Thank you very much
Thank you.
Worked great – thanks
Thx alot.
perfect, exactly the help and information required to fix this problem without complicated comments and instruction…congrats…
wow thank you
it works perfectly, thanks! :D
thanx alot for this wonderful tip :)
Thank you so much!
I think I know why developer disable this function by default.
Because now when you exit a browser. It does automatically save by default.
You can set up it in
Options> General> When firefox starts “Show my windows and tabs from last time”
Hey raymond thaaank yuuuu million times
Thanks a lot. you are a real hero..
Thanks a lot, very helpful!
excellent :) thanx
thx!! i was considering not updating because of this..now i can still be in love with firefox!! u da man, raymond!!!
Thanks a lot for the info. It worked for me.
A LOT!!!
Thanks Raymond,
What the frig was the matter with the Firefox deveolpers not making the save tabs option default??
thx man!!!
hi!thanx for the info! it’s very helpful since i wal almost frustrated with the ‘non-save tabs’.
Thank you, it was what I was looking for.
i love you
The tabs are saved by default. Select history and then select restore previous session.
Thank you very much for sharing :D
Thanks a lot mate.. I also find it odd they would disable this by default, and have no way to toggle it thru the GUI.
It’s works. Thanks a lot
thanks lot
you rock! thanks much.
I still hesitate to move to 4.0 because some addon that I use daily is not 4.0 ready yet……. any easy method to check if the addon is ready for 4.0 with messy with my current 3.6.15?
Worked a treat, thankyou!
Thank You! I have been looking for a solution on the net. Luckily I found your site. Good Job!
Thanks. I knew you could do this but could not find the line on about:config. Very helpful
Thanks alot for this!
That was a great call on save and quit. Do you know how to speed up u torrent while on wifi or public internet. I thank you for your help.
Dang!!! works just as explained, thanks a lot Raymond…
Firefox remembers your tabs without having to do all that. Just close Firefox with any amount of tabs and when you open again, on the default homepage, just click restore tabs.
and you can change what your homepage settings is by just going to the options menu and in the general section make sure you chose windows and tabs from last time.
Thanxxxxxx!!!
Another good thing came out of it, after upgrading to FF4 the scrolling with the touch pad on the laptop didn’t work, and I also noticed that I wasn’t the only one commenting about it.
For some reason, after changing as mentioned above the – “about:config” for the multiple tab thing, miraculously the scrolling suddenly started working again.
Hi Raymond – have you looked at the Bartab extension as an much more user friendly alternative to keeping a list of tabs/sites? Life saver for me – regularly have 4/5 windows and 100+ tabs ‘open’ this way without any slowdown at all – only a few of your recently used tabs will be loaded/active, the rest are like placeholders which are reloaded when you click on them.
addons.mozilla.org/en-us/firefox/addon/bartab/
Nicely done! This is why I love Firefox.
how can i do that in Chrome ?
There is a nice addon called “session manager” which lets you save all your open tabs by a name.
I always use more than 70-80 tabs while working on a big project, and save all of them by the project name so that I know what did I refer to when I was doing that project.
It also has other nice features. You should definitely give it a try.
thnks mate , u r superman !
Thanks for the tip Raymond :D.
@Dan
Changing it in the Options page would load tabs from the previous session every single time,whether you want them or not.
Changing the config.on the other hand,merely gives you an option every time where you can specify if you want the previous session tabs to load the next time you open the browser.Much better if you don’t want to keep changing the options every time.
Did not work for me. My FF is set as per Dan’s illustration
thanks for the tip!
Works perfectly, thanks! I wonder why they removed this option…
Thanks for the warning and instructions. I’ve made the switch to Opera (where this is never an issue) because I don’t care for some of the changes FF made in version 4. Still, I will eventually get around to installing it – always good to have a backup browser – and I will definitely want to make this change.
May I say, very belatedly, it is great to have you back.
Thanks Ray, really helpful tip.
@kedar
That only happens with me when I force close Firefox or it crashes, which are actually the same thing.
Thank you very much. I was disappointed when I found out the same thing. Now my FF is Grrrrreat.
@Kedar: Firefox 4 doesn’t have that behavior by default.
Whats the point? Firefox prompts you to restore previous session, when you close all tabs and start firefox again.
@Dan: I did not say that your method is bad or my method is better. The method that you pointed out is indeed easier and convenient.
hi guys thanqs for helping me.
Thank you! This just saved my life =)
Try to use this readitlaterlist.com/ to visit interesting sites again =)
@Raymond If one thing is easy, why you try to do hard?
Thanx for that tip Raymond ;)
@Dan, thanks for the tip. Didn’t notice that it can be done so easily :P
Isn’t it more “geeky” to do it via about:config rather than a few mouse clicks?
I think they did so because in FF 4, new homepage is “about:home” which has an option to restore previous session.
Also to make browsing more simplified….
I have try this before, but not working..
I will try this again.. :)
WTF bro? You are geek or what ? Shame on you !!
Look here: much simple!! i54.tinypic.com/2mzxf1v.jpg
Thanks Raymond!.. i wander if it can be applied to Opera?
Good one, just exploring FF 4 since last evening….
lol. you don’t have to do anything. it automatically remembers the tab.
1.close your firefox with few tabs
2.it will warn you, just click close
3.open firefox
4.click restore session
Thank you for the tip ;-)