Firefox open spam tabs

Firefox opens new tabs with sponsored ads,
I have scanned my computer with virus scanning software and different software cited https://support.mozilla.org/en-US/questions/697011?esab=a&as=aaq but find nothing.
Then I did the same navigation with Chrome and Opera, but no tab ad has been opened.
Finally I disabled the plugins one by one and I realized that with firebug disabled no longer the spam, it seems to open up once they parse the page when the keywords are found relevant.
Uninstall firefox and reinstall it does not eliminate the problem, there are probably other folders to be deleted that I do not know.
For more complete the tabs opened are only in Italian language, should not be a widespread problem, but most likely there is a leak in firebug extension.
Also for completeness, I report the id parameter represented in get parameter in the url of some sponsored ads. zanox1170335.
I dont know if the problem is really for firebug plugin, but i had only disabled this plugin and if some file can be usefull to you for analize it, i can give you.

I'd like to know whether the news tabs are generated from inside Firefox or by an external program. To make sure links open differently, you could adjust the following settings.
(1) In a new tab, type or paste '''about:config''' in the address bar and press Enter. Click the button promising to be careful.
(2) In the filter box, type or paste '''link.open''' and pause while the list is filtered. These should appear. What values do you have?
(A) '''browser.link.open_newwindow'''
3 = divert new window to a new tab (default) (checked*) 
2 = allow link to open a new window (unchecked*) 
1 = force new window into same tab
'''*''' First checkbox in Options > Tabs
(B) '''browser.link.open_newwindow.restriction'''
0 = open_newwindow preference honored for all new windows 
2 = open_newwindow preference honored for all new windows ''except'' script windows with features (default) 
1 = open_newwindow preference ignored completely (same effect as open_newwindow=2)
''By default, popups that specify a particular window size or turn off certain window features will appear in a new window. If you set this preference to 0 then all popups are forced to a new tab.''
(C) '''browser.link.open_newwindow.override.external'''
-1 = open_newwindow applies to external links (default) 
3 = open external links in a new tab 
2 = open external links in a new window 
1 = open external links in active tab
''On this third one, try choosing 2 to force externally launched pages into a new window instead of a new tab in an existing window.''

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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]]

Avoid firefox opening 2 tabs on first time

Hello,
For internal uses at my work place, we use a customized Firefox,
All is ok out the fact that the first time we opening customized Firefox on a PC,
when no profile folder is existing, firefox open 2 tabs.
And after this first time all is ok, i think this is the "welcome tab".
What can i do to avoid this tab opening.
This is our user.js file to overwrite the prefs.js.
If i remove the
"user_pref("startup.homepage_welcome_url", "http://10.10.10.11:8008");"
It tries to open the mozilla welcome page
user_pref("startup.homepage_override_url", "http://10.10.10.11:8008");
user_pref("startup.homepage_welcome_url", "http://10.10.10.11:8008");
user_pref("javascript.enabled", true);
user_pref("app.update.enabled", false);
user_pref("browser.startup.homepage", "http://10.10.10.11:8008");
user_pref("accessibility.browsewithcaret", false);
user_pref("browser.cache.disk.enable", false);
user_pref("browser.popups.showPopupBlocker", false);
user_pref("browser.cache.memory.enable", false);
user_pref("browser.shell.checkDefaultBrowser", false);
user_pref("browser.backspace_action", 2);
user_pref("privacy.popups.disable_from_plugins", 0);
user_pref("privacy.sanitize.sanitizeOnShutdown", true);
user_pref("update_notifications.enabled", false);
user_pref("browser.tabs.showSingleWindowModePrefs", true);
user_pref("accessibility.browsewithcaret_shortcut.enabled", false);
user_pref("plugins.hide_infobar_for_outdated_plugin", true);
user_pref("extensions.blocklist.enabled", false);
user_pref("browser.newtabpage.enabled", false);
user_pref("browser.newtab.url", "http://10.10.10.11:8008");
user_pref("browser.tabs.autoHide", false);
user_pref("zoom.minPercent", 100);
user_pref("zoom.maxPercent", 100);
Thanks.

Hello,
'''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* On Windows you can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac you can open Firefox 4.0+ in Safe Mode by holding the '''option''' key while starting Firefox.
* On Linux you can open Firefox 4.0+ in Safe Mode by quitting Firefox and then going to your Terminal and running: firefox -safe-mode (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
* Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
[[Image:FirefoxSafeMode|width=520]]
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''
Thank you.

Firefox opens several tabs on startup...they used to name the site, now they just say Connecting w/spinning circle. ???

Firefox opens several tabs on startup. These have always displayed the name of the site in the past. But now they just say "Connecting" with a spinning circle... forever. Hard to find the tab I want-

Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
It is also 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

Firefox opens new tabs to spam sites randomly?

I've looked into this, but it's not the redirect virus that sends to to a different spam site, and it doesn't happen when I refresh or open a new tab myself. Every 15 minutes to hour Firefox opens a new tab by itself sending me to a spam site(most common: Earn a living online ads and those sites that have a pop up asking if you really want to leave). I'm not sure what's causing this, and my AVG isn't detecting anything. Please help, thank you!
== This happened ==
Every time Firefox opened
== I don't remember if I downloaded something, but I only download from trusted sites. About a week ago is when this started happening.

Ok, I fixed this myself finally. it's a tdsskiller rootkit, so most likely it will keep you from going to sites to help you fix it. Get the rootkit killer from Kaspersky (link below), run it, problem all gone bye-bye!
http://support.kaspersky.com/viruses/solutions?qid=208280684

I'm having firefox open my tabs from last session, but it also opens a bunch of additional blank sessions (lots of them!!!)

I've got the configuration set to save my tabs when I close firefox and to reopen those tabs when I start firefox again. That part is now working correctly BUT I also get a whole bunch of additional firefox windows (not tabs, totally separate windows), blank. I've counted, and actually had almost 70 of these to close once. The number seems to vary depending on how many tabs I had open in the session I closed (I think anyway). It's a royal pain to have to close all those additional windows. Help! Thanks in advance.

Either an add-on or a site you have visited corrupted your Profile.
You should create a new one and try it out, if it doesn't help you can always go back.
https://support.mozilla.com/en-US/kb/Managing-profiles

Why does Firefox open new tabs when HOME is clicked?

I just upgraded to version 29.0 from a 4 year old version and I'm experiencing a problem that I can't imagine how to correct. I have two home pages set in my config, so that when I open firefox I get two tabs displayed. My Home Page field reads "https://www.google.com|https://news.google.com" When I open Firefox I get two tabs, one for Google and one for Google News.
On my old version, if I was in the first tab & navigated to www.hp.com and then later clicked HOME, Firefox would load that tab back to google. If I was in the second tab, it would navigate that tab back to google as well. The multiple Home page option was just a great help for initialization.
Now, regardless of what tab I'm in, when I click "HOME" Firefox opens two new pages, sets the first to my first home and the second to my second home and now I have FOUR tabs open. Click home again and I have 6 tabs, again and 8 tabs, etc.
There has to be a way to fix this. The HOME button is supposed to operate of the current focus, just as it does if you have a single home page specified.

Hi Stan, what both Ed and I are saying is that the first of your home pages should open ''in the current tab you're viewing'' -- the way you want -- because that's what happens for us.
Could you repeat the test in Firefox's Safe Mode? That's a standard diagnostic tool to deactivate extensions and some advanced features of Firefox. More info: [[Troubleshoot Firefox issues using Safe Mode]].
You can restart Firefox in Safe Mode using either:
* "3-bar" menu button > "?" button > Restart with Add-ons Disabled
* Help menu > Restart with Add-ons Disabled
Not all add-ons are disabled: Flash and other plugins still run
After Firefox shuts down, a small dialog should appear. Click "Start in Safe Mode" (''not'' Reset).
Any difference?

After upgrade to v6, while surfing, Firefox opens active tab in new window few times in hour... why?

I am using laptop. When I click on some link or in some text field or when I start typing on gsmarena.com in search box... Firefox opens new window with the currently active TAB. This is very anoying and I thought that it will be OK but now it started to happen on PC also. It is not happening always with the same actions and is hardly reproduced.

Make sure that you do not drag a tab in the browser window. 
Firefox 3.5 versions and later have a feature called tear-off tabs. 
You can detach a tab from the current window and open it in a new window by dragging a tab in the browser window. 
You can drag that tab back to the tab bar in the original window to undo that detaching.
bug489729 (Disable detach and tear off tab):
*https://addons.mozilla.org/en-US/firefox/addon/bug489729-disable-detach-and-t

Why won't firefox open new tabs for hotmail?

Firefox always opened hotmail in a new tab, but now it only opens in a new window. What happened?

Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]
You can look at these prefs on the about:config page. 
* http://kb.mozillazine.org/browser.link.open_newwindow (3)
* http://kb.mozillazine.org/browser.link.open_newwindow.restriction (0)
Some extensions that you can look at:
* Tabberwocky: https://addons.mozilla.org/firefox/addon/14439
* Tab Mix Plus : https://addons.mozilla.org/firefox/addon/1122

Firefox opens new tabs automatically, so i end up with multiple tabs of the same site. it's like it is consistantly trying to restore my last session.

Firefox keeps reloading tabs from my recent history over and over. So i might end up with multiple tabs of Pandora, Google home page or other sites I go to all the time-all running at the same time . rebooting does not help.

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 [2] and sessionstore.bak in the Firefox Profile Folder.
* Help > Troubleshooting Information > Profile Directory: Open Containing Folder
* http://kb.mozillazine.org/Profile_folder_-_Firefox
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 open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).
See also:
* [1] http://kb.mozillazine.org/Session_Restore
* [2] http://kb.mozillazine.org/sessionstore.js

When downloading a file Firefox opens Innumerable tabs and is very difficult to stop.

Are you aware of this problem, if so what is its cause and how do I fix it?

You may need to change the action for a content type as shown here - https://support.mozilla.com/kb/Firefox+keeps+opening+many+tabs+or+windows

Firefox opens multiple tabs, loses my loaded pages when I click on email addresses on web pages, I use a MacbookPro

As above, opens multiple tabs, empty ones, takes several attempts to quit Firefox, can't restore my pages, checked my mailto settings they all fine.
I use as gmail, macbookpro, snowleopard, always update as they come available etcalways used firefox only ahd this problem with this macbook, which is about a year old.
Checked out the questions and they didn't help, Cheers!

*https://support.mozilla.com/kb/Firefox+keeps+opening+many+tabs+or+windows

Firefox opens multiple tabs while clicking on "Manage account" under File- Account in Office 2013 opens the right Tab and another random URL-Tab

I have office 365 installed. When I click on Manage Account under File->Accounts in office 2013, it opens 2 Tabs in Firefox.
Tab1: https://office.microsoft.com/MyAccount.aspx?ver=15&app=winword.exe&MachineKey=02011-005-827906&fromAR=1
Tab2: http://www.4a1.com/ ( which is random)
The version of firefox is 24 and set as the default browser.
Operating System: Windows 7SP1
Already contacted Internet Service provider-Optimum, also the antivirus for security concerns but could not find anything from their end respectively.
The issue occurs on Windows 8 laptop also.

Thank you for your reply.
(FYI: The above question was posted by a ''Microsoft Research Engineer'' and me since neither of us can figure out why this is happening. So the brain-bank on this is pretty big!)
I scanned with all of the above scanners. (Thank you for the links!)
I also scanned my system with Adaware, Super Antispyware, Norton Internet Security 2013, and Norton Power Eraser . . . and Kapersky v14 on the Windows 8 system)
NONE of the scanners reported anything other than the usual trackers.
Firefox was un-installed, re-installed, reverted back 4 versions ''and'' v3. Chrome shows the same result.
The Windows 8 system was wiped and restored. Office 365 was immediately re-installed and showed the SAME behavior except that the "random" 3-character URL was different . . .
. . . This extra Tab ''only'' shows up when I open any Office 2013 product to a New document or worksheet go to File>Account>Manage Account.

How do I stop Firefox opening multiple tabs?

I upgraded to version 4 of Firefox. After shutting down the other night, every time I open FF it opens 5 tabs for 5 differient websites - all in my favourites. I haved not asked for this and cannot find a way of turning it off. I tried uninstalling and reinstalling FF and the tabs still appear. A little help would be appreciated.

Check to see if they have been set as home pages, if they have you can change the home page as shown here - https://support.mozilla.com/kb/How+to+set+the+home+page3

Firefox opening many tabs making PC crash?

My Mozilla Firefox recently update by its own when I opened it. After the update was done, Firefox opened with the Mozilla Welcome Page.
The problem starts when I click on the + button to create a second tab to begin a research. Suddenly the browser opens tabs after tabs until my PC end it with a fatal error, commonly known as a blue screen.
Now I can't even get in Windows because it just wont boot. It tells me my software is severely damaged and needs a recovery. I've tried the System repair over and over with no results, to finally end up with a Windows apology message saying that they can't really do anything for me.

I recently updated my version (not really wanting to because the last version upgrade deleted certain parts of the Norton software I have)...but months later it was fixed my Mozilla Firefox (as it promised it would...) Now, I went ahead and did the upgrade and it deleted the same parts of the Norton software.
Only this time...other issues similar to what you described...where Mozilla Firefox opens another window & opens (in my case) 5 tabs.... & for me, it's every time I check my email (Earthlink service provider)...I click onto a new or old email and that's when the second Mozilla Firefox window opens with those tabs. I just close the file and I am able to view my email by choosing the forward email. I have absolutely no idea why...and Earthlink technicians refer me to Mozilla Firefox.
I'm hoping that it fixes itself soon. The interesting thing about it is that the only email it does not do this to is from the email I get from a job link information notice from the State of California's Personnel Board website.
I've seen the "crash" report a couple times...not sure when...but I've just been making due until I can find someone who can help me resolve me problem too.

Firefox open spam tabs

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