Whenever I start Firefox it opens 10 windows with blank tabs

Every time I start up firefox it opens 1 window with the open tab from my previous session and 9 more windows with blank tabs.

It is possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.
Delete the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.
* Help > Troubleshooting Information > Profile Directory: Open Containing Folder
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/sessionstore.js
If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well. 
Deleting sessionstore.js will cause App Tabs and Tab Groups and all open tabs to get lost, so you will have to create them again (make a note or bookmark them).
See:
* http://kb.mozillazine.org/Session_Restore

Similar Messages

I use tabbed browsing. Firefox randomly opens new windows with advertising. Pop-ups are disabled. How to fix?

I use Firefox with Windows 7. I use tabbed browsing, and the tabs show at the top of the page. At the bottom of the page, where the Firefox logo is displayed, Firefox will randomly open a second window with advertising. This is a Firefox issue because it says Firefox at the top of the new page. Pop-ups are disabled via Tools>Options>Content. Pop-ups also are disabled on the Verizon Security Suite.

For possible causes see http://kb.mozillazine.org/Popups_not_blocked

I loaded a jZip programme, now whenever I start Firefox it open with the jZip search page and I can't permanently change the home page to my own selection. How can I get rid of theis iZip home page

I have tried all the optons to change the home page, but when I exit from Firefox and restart, it will revert to the iZip search engine home page. I even deleted the izip search engine reference from the searchplugin directory but with no success

You can open the about:config page via the location bar and do a search for jzip via the Filter at the top of the about:config page. 
You can reset all jzip related prefs via the right-click context menu to their default values.
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 the Filter bar at to top of the about:config page to locate a pref more easily.

How can I merge all of the new FF windows that are open into one window with multiple tabs? Safari has a merge windows feature that I like. This is really nice when conducting reasearch on multiple sites at the same time.

When I clik on weblinks they all open into new windows making it somewhat painful to clik on window in the menu bar to go to each new page. I would rather have a feature that would allow me to merge all of those individual windows into tabs within one page.
== This happened ==
Every time Firefox opened

Thank you. That worked. I was able to open 1 window with multiple tabs. Thanks cor-el!

Firefox opens blank windows, plus a normal window with my previous sessions, whenever I start (Firefox 6 on Windows XP) so how do I make it stop doing that?

Since upgrading to Firefox 6 my Windows XP computer opens about 40 blank Firefox windows whenever I start or restart Firefox. I get my previous session (a single window with multiple tabs) but also these 40+ blank windows that I have to close. So I close them all, restart, and get same thing.

Restore the default home page
* https://support.mozilla.com/en-US/kb/How%20to%20set%20the%20home%20page#w_restore-the-default-home-page
Check and tell if its working.

When I start Firefox it opens two instances at once

v7.0.1, running under Windows XP:
I thought the Tabbed Browsing feature looked really useful and spent an hour or so created a number of Tab Groups from my bookmarks. However, now when I start Firefox it opens two instances immediately, one correctly with my Tab Groups available but also another with just the home page. Apart from not wanting the second instance, there's now the risk that if I close the wrong one first, all of my carefully set up groups will disappear.
Something has gone wrong - how to correct it?

You can try to delete the user.js in your profile folder:
https://support.mozilla.com/en-US/kb/Preferences%20are%20not%20saved
Follow steps 1 and 2 to get to the folder
If this doesn't work, try deleting user.bk as well?
(This worked for me when I deleted user.js and user.bk, although I actually copied it to my desktop first in case it didn't work.)
EDIT: When I looked at the user.js 's contents, removing the line:
user_pref("browser.startup.homepage_override.mstone", "rv:7.0.1");
also fixed the problem

I can only open up one window with multiple tabs; right click "open in a new window" does not work. I uninstalled Firefox and reinstalled Firefox with same results.

Just bought a new i5 laptop and am transferring files, etc onto new box. Last night I had two separate Firefox windows up. I downloaded Nexus Ultimate late and rebooted this morning. I had to restart Firefox then, and it did not save my settings/tabs as I prompted it to do when it shut down to reboot.
I uninstalled Nexus and wasted many hours trying to resolve this, including two failed system restores (looks like Nexus is a dirty little bugger) Windows Explorer will open up multiple windows. Firefox will not. Help.

Have you tried: click Firefox button > New Tab > New Window '''''OR''''' CTRL+N '''''OR''''' File > New Window (if using the Menu Bar)
Once open, Firefox locks the Profile that is in use and you can not open another window with that Firefox version and Profile combination using the Windows Desktop icon or the Windows Programs list.

I am receiving a lot of pop-up ads on website pages. It has only recently started happening. They open new windows with ads for online gambling, online dating and other things. They are annoying and I want them shut off. Please help me

I have recently started seeing millions of pop-up ads on website pages. It is not something that normally happens. They open new windows with ads for online gambling, online dating among other things. I am growing sick and tired of these ads, and have tried multiple things. I have uninstalled and reinstalled software, I have blocked pop-up ads and unenabled Java script. I have tried everything I could find, but nothing has worked. I have even downloaded AdBlock and Clean Genius. Nothing has even remotely changed this annoying trait. I hope this can be a quick fix I can perform and not something that will have to be done by a tech-hand. Please, if you know anything about this issue, let me know how to fix it.
Thanks.

Unfortunately, you have installed malware by clicking on a pop up ad.
Removal instructions here >> The Safe Mac » Adware Removal Guide
Uninstall CleanGenius > Mac App uninstaller: How to uninstall the Macintosh applications with CleanGenius uninstaller on Mac OS X?
Third party maintenance utilities are not necessary on a Mac and can actually do more harm than good and cannot remove malware > Mac App uninstaller: How to uninstall the Macintosh applications with CleanGenius uninstaller on Mac OS X?

I WANT TO REMOVE BABYLON SEARCH WHICH APPEARS WHENEVER I START FIREFOX

In addition to above I wish to inform you that Babylon addon is not available in my computer so that I may remove the same. I suspect some scam as I want Google as my default web browser & I want that whenever I start Firefox I should see startup page of Firefox and not Babylon search page, Babylon was erroneously downloaded by me which I removed but I am not able to remove Babylon search.
''(changed text to lowercase for readability - c)''

I did this but the problem still persists. The Babylon icon is still on the page and it is still using Babylon as a search engine. I went back into the about:config and when I type in keyword the adjustment suggested is fine but there is another Babylon lineafter it. It is as follows:
extensions.BabylonToolbar.keyWordUrl i user set string http://search.babylon.com/?babsrc=SP_ss&q={searchTerms}&mntrId=a4c2fb5f00000000000000ff9c40d7f0&tlver=1.4.35.10&affID=100489

How do I set Firefox to open new windows in my second monitor?

When opening a new window (by right clicking a link and selecting Open in New Window), I would like the window to be opened in my second monitor. Firefox used to do this, but randomly stopped. Now when I open a new window it is opened in my primary monitor. It does not open maximized (just short of being completely maximized). I have tried the fix I used before- moving the un-maximized browser to the second window, closing and re-opening the window. I have also tried moving the un-maximized browser, maximizing, closing and re-opening. Does anyone know how I can restore Firefox to open my new window in the second monitor?
== This happened ==
Every time Firefox opened
== Randomly

Click the orange Firefox button, and click "Options". This will bring up a new window with a "Tabs" tab at the top. Click that. There will be several checked boxes, including one called "Open new windows in a new tab instead" up at the top of the list. Uncheck that box and you should be good to go.
ETA: This should also work if you click "Tools" and "Options" within your version.

How do I set Firefox to open new windows in a separate window (not in tabs)?

How do I set Firefox to open new windows in a separate window (not in tabs)?

Click the orange Firefox button, and click "Options". This will bring up a new window with a "Tabs" tab at the top. Click that. There will be several checked boxes, including one called "Open new windows in a new tab instead" up at the top of the list. Uncheck that box and you should be good to go.
ETA: This should also work if you click "Tools" and "Options" within your version.

When i close window with multiple tabs angd start new session (open new window) old tabs open again, how can i stop it?

when i close window with multiple tabs and start new session (open new window) old tabs open again, how can i stop it?

It is possible that there is a problem with the files [http://kb.mozillazine.org/sessionstore.js sessionstore.js] and sessionstore.bak in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Profile Folder]
Delete [http://kb.mozillazine.org/sessionstore.js sessionstore.js] and sessionstore.bak in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Profile Folder]
* Help > Troubleshooting Information > Profile Directory: Open Containing Folder
If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well.
Deleting sessionstore.js will cause App Tabs and Tab Groups to get lost, so you will have to create them again (make a note).
See:
* http://kb.mozillazine.org/Session_Restore

For some reason every time I start Firefox I get a window to print the current page. Am I the only one this happens to? Is there any way to get rid of it? It just started with the previous update.

When I start Firefox, the standard print window comes up as if I had clicked on print under the file menu. I close the window without problems, and it doesn't show up again until the next time I start Firefox. When I click on print under the file menu, I get the print window without any problems.

See:
* http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder. 
You may need to delete active-update.xml and updates.xml as well if present.
C:\Documents and Settings\<user>\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates
(%USERPROFILE%\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox)
If you have problems with updating then easiest is to download the full version and uninstall the currently installed version and remove the Firefox program folder to do a clean install of the new version.
* Download a fresh Firefox copy and save the file to the desktop.
* Firefox 4.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Do not remove personal data if you uninstall the current version.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder] and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

Firefox keeps opening multiple windows when web link to iTunes clicked.

Running Windows 7, 64 bit. Clicked the "View in iTunes" button on this page, https://itunes.apple.com/gb/app/smartscan-express-fastest/id533516060?mt=8
Link did not open and instead Firefox kept opening another window continuously until there were dozens of windows opening one on top of the other. The only way to stop this was to Shut Down the PC. This has happened on several occasions and it's always when a link to iTunes is concerned.

Sorry, this can happen when Firefox asks how you want to open something that Firefox doesn't know how to open, but you tell Firefox to go ahead and open it. This article describes the various ways to resolve it: [[Firefox repeatedly opens empty tabs or windows after you click on a link]].

Everytime i start up firefox i get 30 firefoxs then i close and i get 31 on and on how do i fix to only get 1 firefox also ec new window has new tab in the tab box as the 1st tab

everytime i start up firefox i get 30 firefoxs then i close and i get 31 on and on how do i fix to only get 1 firefox also ec new window has "new tab" in the tab box as the 1st tab

Hello,
If you can actually see all of your tiles, you can change your configuration page settings:
# In the [[Location bar autocomplete|Location bar]], type '''about:config''' and press '''Enter'''. The about:config "''This might void your warranty!''" warning page may appear.
# Click '''I'll be careful, I promise!''' to continue to the about:config page.
# Search for '''browser.newtabpage.columns''' and change it to 3, or however many columns you like
#* Note: '''browser.newtabpage.rows''' allows you to change to how many rows you want as well
Alternatively, you can set a fixed number of tiles with the following extension:
* https://addons.mozilla.org/en-US/firefox/addon/new-tab-tools/

Whenever I start Firefox it opens 10 windows with blank tabs

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