Firefox ALWAYS re-opens my tabs when it is closed improperly.

When it crashes my computer and I need to restart manually, or I get an unresponsive site and force quit it. It seems like a counter-productive feature to re-open the site that caused the problem in the first place. There used to be an option to prevent Firefox from re-opening tabs upon improperly closing it, but in the most recent updates I have been unable to find it. Does anyone know how I can do this?

Set the Integer pref browser.sessionstore.max_resumed_crashes to 0 on the about:config page to get the about:sessionrestore page immediately with the first restart after a crash has occurred or the Task Manager was used to close Firefox.
* http://kb.mozillazine.org/browser.sessionstore.max_resumed_crashes
That will allow you to deselect the tab(s) that you do not want to reopen, but will allow to reopen other tabs.
See:
* http://kb.mozillazine.org/Session_Restore#Restoring_a_session_after_a_crash
* http://kb.mozillazine.org/Browser.sessionstore.max_resumed_crashes
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 via the right-click context menu if they are user set
*Preferences can be changed via the right-click context menu: Modify (String or Integer) or Toggle (Boolean)

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Firefox won't open new tabs when I click, also he doesn't open new tabs when I use CTRL+T. Any solutions?

When I want to open a new tab, firefox doesn't do it. The problem is the same when I use CTRL+T. So I can't open any new tabs.
Nothing seems to work: restart the pc, closing firefox,...

Uninstall the '''''Ask Toolbar'''''. It can cause that problem.
*http://support.mozilla.com/en-US/kb/Uninstalling+add-ons
*http://support.mozilla.com/en-US/kb/Cannot%20uninstall%20an%20add-on
*http://kb.mozillazine.org/Uninstalling_toolbars
If that does not solve your problem:
*See --> [http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes Troubleshooting extensions and themes]
*See --> [http://support.mozilla.com/en-US/kb/Troubleshooting+plugins Troubleshooting plugins]
*See --> [http://support.mozilla.com/en-US/kb/Basic+Troubleshooting Basic Troubleshooting]
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''
Not related to your question, but...
You may need to update some plug-ins. Check your plug-ins and update as necessary:
*Plug-in check --> http://www.mozilla.org/en-US/plugincheck/
*'''''Adobe Shockwave for Director Netscape plug-in''''': [https://support.mozilla.com/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox]
*'''''Adobe PDF Plug-In For Firefox and Netscape''''': [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox]
*'''''Shockwave Flash''''' (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]
*'''''Next Generation Java Plug-in for Mozilla browsers''''': [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]

Why does Firefox keep on opening new tabs when I log in to my Facebook account? It only stops when I cancel 4 or 5 tabs already opened.

I just opened my Facebook account today. It happened again i.e. several window tabs opened showing the same first page of my opened Facebook account. This is very annoying.

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
*Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
*Tools > Options > Privacy > Cookies: "Show Cookies"
Do a malware check with some malware scanning programs on the Windows computer. 
You need to scan with all programs because each program detects different malware. 
Make sure that you update each program to get the latest version of their databases before doing a scan. 
*http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
*http://www.superantispyware.com/ - SuperAntispyware
*http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
*http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
*http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
See also:
*"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

Stop Firefox from starting a new tab when a new window opens?

This might be answered, but I cannot find a solution. I will give a scenario for my issue.
I am on the UPS website and click a button to print a shipping label. This opens a new FireFox window, BUT... the new window defaults to a generic tab that ALWAYS opens in circumstances like this. It does NOT open to the tab with my label. The print menu opens, but I cannot switch to the tab with my shipping label. No right click to print either. So I have to go to another browser. Absolutely annoying.
So how can I STOP Firefox from starting this generic tab when a FireFox window opens? BTW, the tab has a search bar at the top and several boxes that I can click on for Facebook, Instagram, etc. Thanks!

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 letting me open another tab when I click the 'new tab' button. It says 'done' in the corner, but never opens a new tab.

Firefox is not letting me open another tab when I click the button or the 'new tab' in file. I have restarted my computer, installed an update, and I still have the same problem browsing.

In past threads, this problem has been linked with the Ask toolbar.
[http://support.mozilla.com/en-US/questions/784371 I can't open a new tab anymore; what happened? | Firefox Support Forum | Firefox Help]
[http://support.mozilla.com/en-US/questions/788008 New tab button does not work, nor does "Open New Tab" toolbar icon. | Firefox Support Forum | Firefox Help]
And several users mentioned a link between Foxit Reader and Ask toolbar:
[http://support.mozilla.com/en-US/questions/786427 "Open a new tab" is not working in Firefox 3.6.13 on WindowXP NT | Firefox Support Forum | Firefox Help]
[http://support.mozilla.com/en-US/questions/794912 I can't open a new tab | Firefox Support Forum | Firefox Help]

Firefox opens mutiple tabs when I open a bookmarked page

Firefox opens mutiple tabs when I open a bookmarked page. When I go to the next bookmarked page Firefox opens all previous tabs that I have recently opened

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]

Will not open new tab when clicked on the + next to open page

firefox does not open new window when I click on the new tab +
also does not open new tab when going through the file menu

This issue can be caused by the Ask.com toolbar (Tools > Add-ons > Extensions)
See:
* [[Troubleshooting extensions and themes]]

Firefox does not open new tab

I have been using Firefox 3.6 and it works quite well, except that a week ago it stopped opening new tabs (when you click on the + sign for new tabs). Cannot find any help in the Firefox help pages.
(Before you tell me to upgrade to 4.0, I did that and it crashes at least once a day, which practically never happened with 3.6.)
I'm using a Lenovo T510t and Windows 7

Un-install the '''''Ask Toolbar''''' until Ask fixes the problem with their toolbar that is causing that issue.
*http://support.mozilla.com/en-US/kb/Uninstalling+add-ons
*http://support.mozilla.com/en-US/kb/Cannot%20uninstall%20an%20add-on
 
 
'''You need to update the following.''' The Plugin version(s) shown below was/were submitted with your question and is/are out of date. You should update to avoid known security issues with the version(s) you have installed. Click on "More system info..." to the right of your question to see what was included with your question.
*Next Generation Java Plug-in 1.6.0_24 for Mozilla browsers
#'''''Check your plugin versions''''' on either of the following links':
#*http://www.mozilla.com/en-US/plugincheck/
#*https://www-trunk.stage.mozilla.com/en-US/plugincheck/
#*'''Note: plugin check page does not have information on all plugin versions'''
#*There are plugin specific testing links available from this page:
#**http://kb.mozillazine.org/Testing_plugins
#'''Update the [[Java]] plugin''' to the latest version.
#*Download site: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE)
#**'''''Be sure to un-check the Yahoo Toolbar option during the install if you do not want it installed.
#*Also see "Manual Update" in this article to update from the Java Control Panel in Windows Control Panel: http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates
#* Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml
#* Remove multiple Java Console extensions (if needed): http://kb.mozillazine.org/Firefox_:_FAQs_:_Install_Java#Multiple_Java_Console_extensions
#*Java Test: http://www.java.com/en/download/help/testvm.xml

I have a new MacBook Pro. I am using firefox, but my homepage is set to google. Firefox constantly keeps opening new tabs to its own homepage by itself. How can I disable this feature?

I have a new MacBook Pro. I am using firefox version 7.0.1, but my homepage is set to google. Firefox constantly keeps opening new tabs to its own homepage by itself. How can I disable this feature.

Hi [email protected]
If you have set Google to be your homepage, that should be the first one to appear. Are you seeing the Firefox home page when you open new tabs? New tabs should be blank by default. The only reason I've seen Firefox open new tabs with Firefox data on it is after an upgrade of the product.

Firefox will not open new 'tabs', not sure if its disabled, but does anyone know how to enable the use of my tabs?

Firefox will not open any tabs on my browser. I've tried using all alternatives to open a new tab - using the 'plus' (+) button doesn't work, 'control + T' doesn't work, going to File and clicking 'new tab' doesn't work either? Help please!

Your suggestion worked! Thanks!

Since updating last time Firefox will not open new tabs unless I right click on a link. It won't open them via file or the tab at the top of the brwoser. Anyone know how to fix this?

Since updating last time Firefox will not open new tabs unless I right click on a link. It won't open them via file or the tab at the top of the brwoser or usinf ctrl + t. Anyone know how to fix this?

I can press ctrl for a new tab but otherwise a new tab does not open. I actually need help regarding this new Synch which apparently will be in Firefox automatically in an upcoming version so I am asking how that will synch with people who use LastPass-of course because I use this very successfully and really am not eager to change the set up that I have in place at this time.
I have read through endless FAQ trying to find anyone else who has this question or concern but have found nothing. Can you please tell me how that service will get along with LastPass which does basically the same thing as Synch-it is probably spelled wrong as it looks wrong to me but if I click back to where this issue began, I will lose all of this question so please respond for the upcoming service synch.

Updated to android 2.3 on my htc evo 4g and now firefox will not open any tabs?

I've been using Firefox 4 since first few weeks of release and all was great with Android 2.2 on my htc evo 4g. Now updated to 2.3 this past weekend and Firefox will not open any tabs. Have resorted to using stock Dolphin... :(
I miss Firefox. What is the fix?

If you use ZoneAlarm Extreme Security then try to disable Virtualization.
*http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
See also:
*[[/questions/880050]]

Firefox now always opens four tabs when I start it. (home page, plus three latest add-on updates)

I updated Firefox and all the add-ons. Since that time, Every time Firefox is opened, it always opens four tabs.
One is my home page. One says Firefox has been updated. The other two are the notices for two add-ons that were updated.
It all began at the time I last updated my "Version-Three-Point-Something-Something..."
I tried upgrading to the latest version of Firefox.
This did not change my problem.
Thanks for your time.
NS

I've tried all your suggestions. Thanks.
No change occurs when I try resetting the home page to "default."
It still opens my home page www.google.com and those other tabs.
I tried the steps in the article. No change.
I've also tried removing the addons and reinstalling them.
No changes - except that one or two fewer tabs pop up.
I have noticed that every restart of Firefox includes a "checking for compatibility of addons" pop-up.
In Add-ons Manager, I can un-check the "Update Add-ons Automatically."
Again, no change.
I was able to capture a few screen shots for you.
Thanks for your patience with me.
NS

Since upgrading to version 32, firefox always opens old tabs when starting, even though i do not have this option set. Version 33.0.3 does the same.

When I updated Firefox to version 32, it started to always show my tabs from the last session when it is started. I tried changing the option "when Firefox starts" to all three of the available choices. None of these changed the behavior. It still opens the tabs that were last opened. I waited for the next release (33.0.3) but the behavior is still the same. I would like Firefox to open to my selected home page.
I'm running Windows 7 Pro.

One possibility is that Firefox keeps crashing during shutdown, and so Firefox is recovering from a crash every time. But if you can see that it is shutting down normally in your testing, that probably isn't it.
Sometimes external software will create or update an optional settings file named user.js. For some reason, one of the things that often shows up in there is a preference to restore your previous session just once. However, because Firefox uses user.js to override your normal settings every time it starts, that then turns into a permanent change. To check for this and remove any user.js file you find, try this support article: [[How to fix preferences that won't save]].
Any luck?

Firefox no longer automatically opens app tabs when I start it, how do I fix this?

Previously when I had an app tab open and closed firefox it would be opened with my home page next time, I just activated firefox sync and this no longer happens.

A good reason to not count on app-tabs as always being restored. Put your app-tabs into a bookmark folder so you can open them into tabs when you need to recreate them.
See if you can get your app-tabs back via History > Restore Previous Session, then after that
History > Restore previous Windows and then maybe restore previous tabs.
I don't use sync and have no idea if it is involved in your problem. I do periodically close all of my tabs, close and restart Firefox, and then reconstruct my app-tabs by opening a folder into tabs. I had to number the titles in the folder so that the tabs would be in the order that I want them to be in as I do use the "Sort Places" extension to sort my bookmarks into alphabetical order.

Firefox ALWAYS re-opens my tabs when it is closed improperly.

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