I get 4 firefox start tabs open when I launch the browser

every time I launch firefox I get 4 'mozilla firefox start page' tabs open simultaneously. I tried uninstalling and reintsalling to no avail.

See this article for some suggestions: [[Firefox has just updated tab shows each time you start Firefox]]
See also http://kb.mozillazine.org/Preferences_not_saved and [[Preferences are not saved]]
* [[How to set the home page]] - Firefox supports multiple home pages separated by '|' symbols
Your above posted system details show outdated plugin(s) with known security and stability risks.
*Shockwave Flash 10.1 r53
Update the [[Managing the Flash plugin|Flash]] plugin to the latest version.
*http://www.adobe.com/software/flash/about/

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How can I get my desktop page to open when I close the browser and then re open it?

when I click the red x to close the browser, when I come back to open the browser later, the last page I was viewing. last session opens, even all other tabs behind it, instead of my google page (my home page)? can this be fixed) I know I can just click the google word in the search bar, but should not have to do this!

{
"application": {
"name": "Firefox",
"version": "32.0.3",
"userAgent": "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0",
"supportURL": "https://support.mozilla.org/1/firefox/32.0.3/WINNT/en-US/"
"crashes": {
"submitted": [],
"pending": 9
"modifiedPreferences": {
"browser.cache.disk.capacity": 358400,
"browser.cache.disk.smart_size.first_run": false,
"browser.cache.frecency_experiment": 3,
"browser.places.smartBookmarksVersion": 7,
"browser.sessionstore.upgradeBackup.latestBuildID": "20140923175406",
"browser.startup.homepage_override.mstone": "32.0.3",
"browser.startup.homepage_override.buildID": "20140923175406",
"dom.mozApps.used": true,
"extensions.lastAppVersion": "32.0.3",
"gfx.direct3d.last_used_feature_level_idx": 0,
"network.cookie.prefsMigrated": true,
"places.history.expiration.transient_current_max_pages": 104858,
"places.database.lastMaintenance": 1413230897,
"plugin.disable_full_page_plugin_for_types": "application/pdf",
"privacy.sanitize.migrateFx3Prefs": true,
"storage.vacuum.last.places.sqlite": 1413230897,
"storage.vacuum.last.index": 0
"graphics": {
"numTotalWindows": 1,
"numAcceleratedWindows": 1,
"windowLayerManagerType": "Direct3D 10",
"windowLayerManagerRemote": false,
"adapterDescription": "AMD Radeon HD 7670M",
"adapterVendorID": "0x1002",
"adapterDeviceID": "0x6840",
"adapterRAM": "1024",
"adapterDrivers": "aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64",
"driverVersion": "13.151.0.0",
"driverDate": "8-19-2013",
"adapterDescription2": "",
"adapterVendorID2": "",
"adapterDeviceID2": "",
"adapterRAM2": "",
"adapterDrivers2": "",
"driverVersion2": "",
"driverDate2": "",
"isGPU2Active": false,
"direct2DEnabled": true,
"directWriteEnabled": true,
"directWriteVersion": "6.3.9600.17111",
"webglRenderer": "Google Inc. -- ANGLE (AMD Radeon HD 7670M Direct3D9Ex vs_3_0 ps_3_0)",
"info": {
"AzureCanvasBackend": "direct2d",
"AzureSkiaAccelerated": 0,
"AzureFallbackCanvasBackend": "cairo",
"AzureContentBackend": "direct2d"
"javaScript": {
"incrementalGCEnabled": true
"accessibility": {
"isActive": true,
"forceDisabled": 0
"libraryVersions": {
"NSPR": {
"minVersion": "4.10.6",
"version": "4.10.6"
"NSS": {
"minVersion": "3.16.5 Basic ECC",
"version": "3.16.5 Basic ECC"
"NSSUTIL": {
"minVersion": "3.16.5",
"version": "3.16.5"
"NSSSSL": {
"minVersion": "3.16.5 Basic ECC",
"version": "3.16.5 Basic ECC"
"NSSSMIME": {
"minVersion": "3.16.5 Basic ECC",
"version": "3.16.5 Basic ECC"
"userJS": {
"exists": false
"extensions": [
"name": "Logitech SetPoint",
"version": "6.5",
"isActive": false,
"id": "{F003DA68-8256-4b37-A6C4-350FA04494DF}"
"name": "Norton Toolbar",
"version": "2014.7.8.23",
"isActive": false,
"id": "{2D3F3651-74B9-4795-BDEC-6DA2F431CB62}"
"name": "Skype Click to Call",
"version": "7.3.16540.9015",
"isActive": false,
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}

My app tabs fail to open when i reopen the browser. why?

After installing 4.0 yesterday I started experimenting with new features, including the app tabs. I closed some of the app tabs, though not all, and then as an experiment closed & reopened the browser.
Your specs say that:
All of the App Tabs you have set when you close Firefox will open as App Tabs when you start Firefox again.
This did happen for me. Neither the app tabs I had open when I closed the browser nor the ones I had closed were saved. It seems that maybe this feature is not behaving as expected? There appears to be no persistence with the app tabs.

Your System Details List shows the NoSquint extension, so you can check the zoom settings in that extension.

Firefox does not open when clicking on the icon, the firefox.exe process consumes 99 % of the CPU and my computer runs slowly.

I have been a happy user of Firefox for many years. Around last April first I opened Firefox and was offered an update to v 4.42.0.0 which I accepted. Installation seemingly went well. I forget now exactly what happened but the result has been that ever since April 1 I haven’t been able to open the Firefox browser when clicking on the Firefox icon. My computer now was running very slowly. I tried to uninstall Firefox, but a popup told me I couldn’t because Firefox was in use. This confused me because I couldn’t see it being used. Only now I have found that on Task Manager processes that “firefox.exe” was consuming 99 % of the CPU. After removing firefox.exe by clicking End Process my computer ran better. I uninstalled Firefox I had on my computer and installed Firefox 5.0. Unfortunately I have the same problems: Firefox does not open when clicking on the icon, the firefox.exe process consumes 99 % of the CPU and my computer runs slowly.

Born2die! Brilliant. I am a desktop clicker and never knew Firefox had a safe mode.
Thank You!
I was unable to start in safe mode initially. The second time I disabled all of the Add-Ons and she started up just fine. I enabled them one by one hoping to track down the culprit but the problem seems to have gone away.
BTW I am running ver. 3.6.8 (in response to cor-el's earlier post) and
Firefox is in the process of downloading 3.6.10 (which I am starting to think may have been what caused this whole problem to begin with)
Incidentally, whats up with all of the Java Console Add Ons?
I have:
Java Console 6.0.11, Java Console 6.0.13, Java Console 6.0.15
Java Console 6.0.17, Java Console 6.0.20, and Java Console 6.0.21
What are they? Do I need them? Can I uninstall them? Is this due to using Open Office?
Also, .NET Framework 0.0.0 Should I uninstall it?

What can I do to rectify the situation in which Firefox will not open pdf files in the browser, even though I have already used all the help suggestions to no avail?

I have tried everything Mozilla has suggested. Still when I click on a pdf, I get the message that the browser cannot open a pdf. I have gone through the help protocol, and it does not work.
I have uninstalled Firefox and reinstalled it, and still not able to open pdf files within the browser.
What else do I do, except go to IE or Chrome and just leave Firefox completely???

A possible cause is the presence of a PDF plugin from an older Adobe Reader plugin in the plugins folder in the Firefox program folder.
See [[Troubleshooting plugins]]
See also: 
http://kb2.adobe.com/cps/405/kb405461.html - The Adobe Acrobat/Reader cannot be used to view PDF files in a browser 
http://kb2.adobe.com/cps/836/cpsid_83688.html - I can’t view a PDF document in my web browser

How can I keep a cookie for a certain site when I have set Firefox to delete cookies when I close the browser?

I have set Firefox to delete all cookies when I close the browser. Some websites identify my computer with a cookie, so when I try to log in to these sites, they don't recognize my computer because the identifying cookie has been deleted. I understand that Internet Explorer has a feature that preserves specified cookies, but haven't been able to find that capability in Firefox. Is there a way to do it?

Let all cookies expire when you close Firefox.
* Tools > Options > Privacy > Cookies: "Keep until": "I close Firefox"
Make an Allow exception for the ones that you want to keep.
* Tools > Options > Privacy > Cookies: "Exceptions"
You can inspect and modify the permissions for the domain in the current tab in "Tools > Page Info > Permissions"
Make sure that you do not use "Clear Recent History" to clear the "Cookies" and the "Site Preferences" (Site Preferences includes the cookie exceptions)
* https://support.mozilla.com/kb/Clear+Recent+History
Clearing cookies will remove all specified (selected) cookies including cookies that have an allow exception.
See also:
* https://support.mozilla.com/kb/Cookies
* https://support.mozilla.com/kb/Enabling+and+disabling+cookies

How do I get rid of two tabs opening when I first open Firefox?

When I first open Firefox I get my home page in one tab but another tab opens also. That one is set for Facebook. How do I get rid of the automatically opening second tab?

Do you get both pages if you launch a new window using either:
* Ctrl+n
* "3-bar" menu button > New Window
''If yes:''
Check your home page setting to see if you have multiple home tabs. A vertical bar (|) is used between the addresses. This article shows where to check this in the Options dialog: [[Startup, home page and download settings]]. This article has more background on multiple home tabs: [[How to set the home page]].
''If no, or if the Options dialog is okay:''
Add-ons may display tabs at startup or in a new window. If you check the address of the Facebook page, is it the normal Facebook URL ([https://www.facebook.com/]) or a different address?
Do you have any Facebook-related extensions? You can review, disable, and often remove extensions on the Add-ons page. Either:
* Ctrl+Shift+a
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In the left column, click Extensions. Then, if in doubt, disable.
Often a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step.
Any improvement?

Firefox memorizes tabs opened when I initiated a close group, exiting out of Firefox to avoid spam websites from downloading onto my computer; why is Firefox re-opening all the tabs I purposely closed down?

On the occasion I search Google.com for images/wallpapers etc while opening multiple tabs, keeping the original page. Seldom the website crashes, causing all my tabs to close, while Firefox restores the websites opened. When this happens, I do appreciate Firefox restoring my lost tabs. However, when I initiate closing the browser, I do NOT wish for Firefox to restore the closed browser. I purposely closed the browser, either the website freezes, or there's spam occurring on that website, or an attempt to download a virus through the 3rd party's website, therefore I choose to shut down the browser in order to start new. When unwanted events like this occurs, I do NOT want Firefox to remember my last browsing history and restore such tabs. It's rather a nuisance and unwanted on Firefox's part. I do not know how to resolve this matter since I'm only a beginner with setting up Privacy settings etc, so please enlighten me.

Firefox 4 saves the previous session automatically, so there is no longer need for the dialog asking if you want to save the current session. 
You can use "Firefox > History > Restore Previous Session" to get the previous session at any time. 
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 (Tools) > Options] > General > Startup: "When Firefox Starts": "Show my windows and tabs from last time"
Make sure that you do not use [[Clear Recent History]] to clear the 'Browsing History' when you close Firefox.

How do I open the browser to my homepage instead of all the previous tabs after telling firefox to automatically save the tabs that were open when I closed the browser?

After telling my browser to 'not ask this question again' when it asked my if I wanted to save all the tabs before closing firefox, I now just want firefox to open to my homepage when I open it. Can you tell me how to change the settings to undo my previous command?

Look here:
*Tools > Options > General > Startup: "When Firefox Starts": "Show my home page"

Firefox won't open when clicked in the dock on my Mac

Mac Snow Leopard v. 10.6.8, Firefox icon in dock, won't open when clicked

As a point of clarification, does Firefox launch if you double click it from your Applications folder through the desktop (Finder)? If yes, right click (or Ctrl-click) on the Firefox icon in your Dock and choose Remove From Dock, then drag it on again from your Applications folder. The only other thing I can think is if it's already running but with its window hidden, clicking it again in the Dock might not be bringing it up. In that case try a Force Quit (from the Apple menu at top-left of your screen, click Force Quit..., choose Firefox in the list and click the Force Quit button).

Firefox doesn't open when I click the icon

I've tried all the suggestions such as reinstalling, removing profiles, reseting PC. my Chrome and IE also dont open.
Any help is much appriciated...

hello madoded, if no other browsers start either then it might be a problem deep in your system that we cannot address with standard firefox troubleshooting procedures.
however, you can try the following: first please make sure that your security software isn't blocking your browsers. since such issues can also be caused by malware, also run a full scan of your system with the security software already in place and different tools like the [http://www.malwarebytes.org/products/malwarebytes_free free version of malwarebytes], [http://www.microsoft.com/security/scanner/default.aspx microsoft safety scanner] & [http://www.kaspersky.com/security-scan kaspersky security scan].

Can't get Firefox to NOT open PDF files in the browser

I would like Firefox to always ask whether I want to open or save a PDF document. Instead, it always displays the file in the browser and pops up a toolbar. In Tools/Options/Applications pdf files are not listed. However "PDF Xchange Viewer Document" (my default PDF viewer) is listed and the action is set to "Always ask"; yet it never asks. Why?

Such actions are usually linked to a specific MIME type and if Firefox doesn't obey and ask what to do then you may have created this action for the wrong MIME type.
*http://kb.mozillazine.org/File_types_and_download_actions

I can't get a new folder to open when I hit the new folder button in adobe reader 11

Recently my Adobe Reader won't let me open a new folder when I hit the New folder button - help

Try the forum for Adobe Reader.

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cant not open fire when clicking icon---rebooted---uninststall---reinstalled (I stiil have the same issue
== This happened ==
Not sure how often
== tried to click icon

Windows message that FF is already open when it is not.etc
Exact same as Jim Bakers prob since upg to 3.6.6 from 3.6.3

I have downloaded the latest stable release a few times now and Firefox code variants, all when I close the browser it's process is running indefinitely. Help?

I have downloaded the latest stable release of Firefox and a couple of variants using Firefox code a number of times, the browser crashes totally on certain pages mostly on the yahoo home page.
The main issue is when I manage to avoid the troublesome pages and close down the browser using the red, top right hand corner "X" the browser process is still running and runs indefinitely, this stops the user from reopening the browser unless they manually stop the process through a process manager (task manager). Please help as I "loved" using Firefox.
Thanks,
Karl

Hello Karl, we're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash ID's to help us learn more about your crash.
#Enter about:crashes in the address bar (that's where you enter your website URL) and press Enter. You should now see a list of submitted crash reports.
#Copy the 5 most recent crash ID's that you see in the crash report window and paste them into your response here.
More information and further troubleshooting steps can be found in the [[Firefox crashes]] article.
also you can try to boot the computer in Windows Safe mode with network support (press F8 on the boot screen) and check firefox again.
(If works in Windows Safe mode then you have a problem with other software, like security software or maybe a system driver, that is running on your computer).
thank you

I get 4 firefox start tabs open when I launch the browser

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