When I start firefox 9.0.1 in windows xp, a popup that says "Log onto x-marks" appears briefly, then the browser locks up. If I can hit cancel before it locks up, the browser works normally.

It was working fine, then all of a sudden it started doing this. I uninstalled the program and reinstalled it from the internet, but it still does the same thing. Rebooting the computer didn't help either.

Perform the suggestions mentioned in the following articles:
* [https://support.mozilla.com/en-US/kb/Template:clearCookiesCache/ Clear Cookies & Cache]
* [[Troubleshooting extensions and themes]]
Check and tell if its working.

Similar Messages

When I launch Firefox 4.0.1 I get an error message that says "We noticed your may have signed inor signed out in another window. Click Ok to reload your page." I have to sign in with my username and password. Richard

When I launch Firefox 4.0.1 I get an error message that says "We noticed your may have signed inor signed out in another window. Click Ok to reload your page." I deleted Firefox and reloaded it - did not solve the problem. This started occurring after I downloaded Windows Service Pack 2. I have Vista 7 OS. So every time I close and relaunch Firefox, I have to sign in with my username and password. Very very, annoying. If I can't get this corrected, I have to start using another Browser. Thanks for your help. Richard

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 to get lost, so you will have to create them again (make a note).
See:
* http://kb.mozillazine.org/Session_Restore

(When I launch Firefox 4.0.1 I get an error message that says "We noticed your may have signed inor signed out in another window. Click Ok to reload your page." Richard)

<blockquote>Locking duplicate thread. 
Please continue here: [/questions/830592]</blockquote> 
(When I launch Firefox 4.0.1 I get an error message that says "We noticed your may have signed inor signed out in another window. Click Ok to reload your page." I deleted Firefox and reloaded it - did not solve the problem. This started occurring after I downloaded Windows Service Pack 2. I have Vista 7 OS. So every time I close and relaunch Firefox, I have to sign in with my username and password. Very very, annoying. If I can't get this corrected, I have to start using another Browser. Thanks for your help. Richard)

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 to get lost, so you will have to create them again (make a note).
See:
* http://kb.mozillazine.org/Session_Restore

When I open safari I get a popup that says " this version of Safari doesn't support the community tool bar". Cure the ignorace someone - whats a community tool bar - apparently I have one but don't know what I'm looking at. -

when I open safari I get a popup that says " this version of Safari doesn't support the community tool bar". Cure the ignorace someone - what's a community tool bar - apparently I have one but don't know what I'm looking at. -

You installed the Conduit spyware. To remove it, triple-click the following line of text to select it:
~/Library/Application Support/Conduit
Copy (command-C) the text to the Clipboard. Then select
Go ▹ Go to Folder
from the Finder menu bar and paste (command-V) into the box that opens. A Finder window may open with a folder named "Conduit" selected. If so, delete the selected folder.
Select Go to Folder again and enter:
/Library
From the folder that opens, delete the following items, if they exist. You may be prompted for your login password.
Application Support/Conduit
InputManagers/CTLoader
LaunchAgents/com.conduit.loader.agent.plist
ScriptingAdditions/ct_scripting.osax
Close the folder. Now select Go to Folder one more time and enter:
/Applications/Toolbars
Delete that item. Close the Finder windows you opened. Log out and log back in.

Firefox 25.0.1 Warn when closing multiple tabs (on) conflicts with "show windows und tabs from last time" (on); need both, but only one or the other works.

Using Firefox 25.0.1 on Windows 7 Home Premium
I've poured through support forums for Mozilla Firefox searching for a fix to my initial problem of the "Warn when closing multiple tabs" pop up not popping up when I have it selected.
Went through About:Config, making sure warnings for tabs und closing, und showing on quit, und quitting, etc. were all set to true, which were "possible" fixes for the issue I was having, there are like five or six things set to true for warnings/quitting/etc. No avail. They are all set to true.
Then I stumbled across one that suggested a conflict with the "Warn When Closing Multiple Tabs" und the "Show Windows und Tabs from last time".
I use both features. However, I found if I want the warning pop up for closing multiple tabs, I have to have "show homepage" or "show blank page" selected instead of "Show windows und tabs from last time" selected. (Tools>Options>General>Start Up>When Firefox Starts:) The problem with this is, yes, I get my warning pop up, BUT, I don't get my tabs from my last session.
The warning in settings (Tools>Options>Tabs>Warn Me When Closing Multiple Tabs) is checked.
To have my tabs restored from last session, I simply select it for "when firefox starts". Bam, I have my tabs that were open from the last time I quit. Und again, full circle, I don't have my warning pop up.
There were also suggestions of the warning on close for tabs is conflicting with add-ons.
However, I don't have many. Und I have yet to test them to see if they interfere. These are according to my Add Ons tab when I check it myself.
Extensions:
1. Avast WebRep (disabled)
2. HP Smart Web Printing (disabled)
Plugins:
1. Adobe Acrobat
2. Google Update
3. iTunes Application Detector
4. Java (TM) Platform SE 7 U45
5. Shockwave Flash
6. Shockwave For Director
7. Silverlight Plug-In
8. VLC Web Plugin
9. Windows Live Photo Gallery
10. Java Deployment Toolkit (disabled)
Note: The Details Firefox provides says I have these for Plugins
* Shockwave Flash 11.9 r900
* Adobe Shockwave for Director Netscape plug-in, version 12.0.5.146
* Next Generation Java Plug-in 10.45.2 for Mozilla browsers
* Google Update
* Adobe PDF Plug-In For Firefox and Netscape 11.0.05
* VLC media player Web Plugin 2.1.0
* 5.1.20913.0
* iTunes Detector Plug-in
* NPWLPG
Unsure of what the "5.1.20913.0" und the "NPWLPG" plugins are, but they don't appear to me under Add Ons.
Und as usual, I'm assuming the solution lies within About:Config, I will show here now what I have set to True.
browser.tabs.warnOnClose - True
browser.tabs.warnOnCloseOtherTabs - True
browser.tabs.warnOnOpen - True
browser.warnOnQuit - True
browser.showQuitWarning - True
As aforementioned:
The seemingly only issue is the conflict between Show Windows/Tabs From Last Time und the Warn On Quit pop up. Und again, I need/want both of them. More so the tabs from the last session, but I really really really really really want the warning.
So, if anyone knows a work around, preferably without having to download anything to fix this, I would be extremely grateful.

You mention a second subject.
''I'm probably going to downgrade to another version of firefox that was suggested to me since I'm also having issues with shockwave flash causing firefox to hang und ultimately needs to be force closed otherwise having to have flash disabled to use firefox.''
Downgrading Firefox 
Flash is notorious for causing Firefox problems. I suggest you start a new thread about that. If at all possible you should try to avoid downgrading to an unsecure & unsupported version of Firefox. it will increase risks to your system and Personal data. (There are methods of mitigating the risks, using a virtual machine or operating within a secure intranet for instance)
*(Do Not) [[Install an older version of Firefox]]
Try Flash with Protected Mode Off 
Worth a try as it takes minimal effort & often solves Flash Problems whilst allowing current and more secure FlashPlayer to be used. See
* http://kb.mozillazine.org/Flash#Flash_Player_11.3_Protected_Mode_-_Windows
* http://forums.adobe.com/thread/1018071#TemporaryWorkaround
If you wish to pursue these subjects further I note you have already started a thread you may as well continue the discussion in that thread, but also post back here so we can follow both.
* ''Firefox is having "Script" issues (Not Responding) und possibly Flash issues?'' [/questions/978181]
** try ensuring you close down Firefox using the menu, that may even help with Flash problems.
Your experience in submitting troubleshooting information on the forum 
(This is out of curiosity, but with the intention of pressing for changes if forum faults are discovered.)
There are yet more changes to this forum underway. Mozilla recently tried to improve the experience for first time users of the forum and a troubleshooting app option was included in the workflow to try to encourage users to submit full troubleshooting information.
I would be interested to know what you thought
I sometimes wonder if users are not trying to use that, or whether forum users run into problems in using it. At one point I wondered whether there was a problem if too much data was included but never actually proved that conjecture.
Assuming you are using the forum, and not merely replying by email look towards the top in the right hand margin for clickable buttons
* Question Details -V- More System Details -> [Additional System Details]
You will note that includes only partial information. There are no changed prefs or extensions listed. Compare for instance the information in this thread [/questions/978130] with full information.
I believe your mystery plugins are Windows related
* NPWLPG relates usually to Windows Live Photo Gallery
* 5.1.20913.0 will be Silverlight

When I open Firefox in my laptop, I get an alert message that says that "It could not initialize the applications security component. The most likely cause is problems with files in your application's profile directory, etc"

This morning it was working fine, but I tried to put 2 addons, "adblock" and "Forcastfox Weather" .
I have both of this addons in my Desktop as well as in Ubuntu. The problem is in Windows XP

This link shows things to check - https://support.mozilla.com/kb/Could+not+initialize+the+browser+security+component

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

When i try to redeem my itunes cards, i get a message that says my session has timed out--i updated to the latest version--still, no luck redeeming cards-help!

when i try to redeem my itunes cards, i get a message that says my session has timed out--i installed the latest version of itunes and tried again--no luck--what else can i do?

The new iTunes has a somewhat different look from the previous version. You can get the old look back if you prefer it by doing View > Show Sidebar in iTunes. Or you can adapt to the new look.

All of a sudden my back button does not work at all, on any site, and when I start Firefox it does not go to the home page I specified

Just a few days ago, I noticed that when I start Firefox it goes to a blank page, despite the fact that I have several times checked and rechecked under "Options" and my home page is in there. Also the back button has stopped working. I have made sure that inprivate browsing is not enabled, history is maintained etc etc

Does the issue still occur if you start Firefox in Safe Mode? http://support.mozilla.com/en-US/kb/Safe+Mode
How about with a new, empty profile? http://support.mozilla.com/en-US/kb/Basic%20Troubleshooting#w_8-make-a-new-profile

Why are all my plugins not starting when I start firefox normally?

When I start firefox, my plugins won't work. It used to work. When I open the add-ons window, it shows all the add-ons correctly but when I click options, it shows a very small window and no options.

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]] 
 
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. 
You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions. 
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

When i start firefox it takes about 30 sec. and he is stopping the working of my mcafee? it started after i update to the 10 version!

when i start firefox it takes about 30 sec. and he is stopping the working of my mcafee? its started after i update to the 10 version!

Thanks for the feedback. You can also try to inform [https://community.mcafee.com/index.jspa McAfee].
Firefox has a add-ons page to temporarily or permanently disable add-ons for checking: '''Tools''' ('''Alt''' + '''T''') > '''Add-ons'''.

When I start firefox, I get a Dialogue bx saying that Firefox had stopped working and Windows is checking the cause, another dialouge box., I have Google Chrome working on my Laptop.

When I start firefox, I get a Dialogue bx saying that Firefox had stopped working and Windows is checking the cause, another dialouge box says that A problem caused the program to stop working correctly. Windows will close the program and notify if a solution is found,the problem continues, I have Google Chrome working on my Laptop.

It is possible that your anti-virus software is corrupting the downloaded files or otherwise interfering with downloading files by Firefox.
Try to disable the real-time (live) scanning of files in your anti-virus software temporarily to see if that makes downloading work.
See also:
* http://kb.mozillazine.org/Unable_to_save_or_download_files

When I start Firefox a bar entitled "Know your rights" appears that contains information about Mozilla but I would like to stop it from appearing.

The "Know your rights" bar appears below the normal Firefox bars and I can get rid of it by clicking on the X at it's right end. I would like to stop this from appearing when I start Firefox but I don't know how to do it.

You can check:
* http://kb.mozillazine.org/Preferences_not_saved

When I start firefox, i get this message ( The instruction at "0x7b9c77a9" referenced memory at "0x7b9c77a9". The memory could not be "read" ) hs anyone any idea why? I have scanned with AVG and something simply called 'Trojan Remover' and they both fin

when I start firefox, i get this message ( The instruction at "0x7b9c77a9" referenced memory at "0x7b9c77a9". The memory could not be "read" ) hs anyone any idea why? I have scanned with AVG and something simply called 'Trojan Remover' and they both find nothing.... any advice would be greatly welcomed.. thanks
== This happened ==
Every time Firefox opened
== this morning 22/07/10

Lyall,
I have seen this before, a long time ago (several years), and I cannot
remember how/if we resolved it.
If this is an impotant issue to you, I suggest that you open a case with
BEA support.
Regards,
Peter.
Got a Question? Ask BEA at http://askbea.bea.com
The views expressed in this posting are solely those of the author, and BEA
Systems, Inc. does not endorse any of these views.
BEA Systems, Inc. is not responsible for the accuracy or completeness of
the
information provided
and assumes no duty to correct, expand upon, delete or update any of the
information contained in this posting.
Lyall Pearce wrote:
The title says it all really.
I see other posts getting replies.
This is a rather important issue, I have seen another post with a similar problem.
While not being a show-stopper it certainly raises concerns.
The application works ok until the application exits (in both development and
executable form)
Apparently this did not happen with Tux 7.1
It does with 8, I do not have 7.1 so I have no workaround.
..Lyall

When I start firefox it tries to install an update and then says it cannot inst and asks if another firefox is running

when i start firefox i get a message that asks if i want to install an update, then it says it cannot install and asks me to close an other firefox progams and try again. there are no other firfox program runing and the the loops starts over.

See http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:
C:\Users\<user>\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates
(%LOCALAPPDATA%\Mozilla\Firefox\Mozilla Firefox\updates)
Do a clean reinstall:
* Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data when uninstalling.
* 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 (not in the Firefox program 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.

When I start firefox 9.0.1 in windows xp, a popup that says "Log onto x-marks" appears briefly, then the browser locks up. If I can hit cancel before it locks up, the browser works normally.

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