How do I prevent firefox from switching tab groups when closing a tab?

I really like the tab groups feature, as it helps cut down on the number of tabs I have open at once. The problem is that when I close a tab, I sometimes get shunted to another random tab group. It is then a pain to get back to where I was before. Is there a way to force Firefox to choose among the current tab group for a tab to open?

This problem persists in Firefox 5.0 on all of my computers (Windows 7, OS X 10.6, and *any* Linux distro). It would be nice if Firefox was forced to remain within a single tab group until no more tabs remain. Also, if we have pinned tabs, closing the last non-pinned tab should select the nearest pinned tab, without switching tab groups.
This issue is pretty annoying. It would be nice to see a remedy. For reference, here is another post with the same issue: http://support.mozilla.com/en-US/questions/828677

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How do I prevent Firefox from switching me to the "working offline" mode in the midst of my online gaming?

I'll be on-line, playing a game or surfing the web and the next thing I know I don't have an internet connection. I click on "repair internet connection" and get the feedback, "unable to repair. I click on file and see that there is a check mark by 'work off-line' which I never checked. How can I prevent Firefox browser from automatically switching me over to the off-line mode whenever it feels like it. Very frustrating! Happens more than a few times a week but not every time Firefox is open.

Create a new Boolean pref with the name network.manage-offline-status and set the value to false.
Right-click on the about:config page to open the right-click context menu and use "New > Boolean" to create a new Boolean pref.
Name: network.manage-offline-status
Value: false
See also http://kb.mozillazine.org/about%3Aconfig

How do I prevent Firefox from "cycling" the tabs?

How can I prevent Firefox from cycling the tabs?
I like my tabs where they are. I have a good memory. If a tab is at the left, I want it to stay at the left. I do not want firefox to move the activated tab around, under any circumstance. Where there's code in the Chrome to make a tab move without the user dragging it, I want an option to prevent this from ever ocurring. Movement of tabs is very disorienting. I am not talking about scrolling. I am talking about when there are 6 tabs open and the rightmost 5 keep changing places without user interaction.

You can check the home page setting.
*Tools > Options > General > Startup: Home page
*https://support.mozilla.org/kb/How+to+set+the+home+page - Firefox supports multiple home pages separated by '|' symbols
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*http://kb.mozillazine.org/Preferences_not_saved

Firefox connects to google-analytics for some sites, and then gets stuck, and I can never get onto the site. How do I prevent Firefox from connecting to google-analytics? I use XP with service pak 3 in English

Firefox connects to google-analytics for some sites,when i click on links in websites or emails and then gets stuck, and I can never get onto the site. Or opens a new bower behind the one i'm usind that's blank i don't even know it's there untill i close the one i'm using. How do I prevent Firefox from connecting to google-analytics? Or opening a blank bowser behind the one i'm using. I use XP with service pak 3 in English
== This happened ==
A few times a week
== a couple months ago

I got the same issue.
I go on a website and all the sudden another window pops up with "results.google-analytics.com" or "search.google-analytics.com". It has often ads for other sites for example. black single dating site
how can I can I stop that from happening again?
I didn't download or do anything, just visit websites, that I visit on a regular basis.
OS: Windows XP
Firefox Version: 3.6.6

How can I prevent Firefox from cleaning my clipboard at exit (exit or closing firefox) ?

How can I prevent Firefox from cleaning my clipboard at exit (exit or closing firefox) ?
I am using FF 9.0.1 and the problem start from FF 5.0

You can't prevent that. 
If you've placed data on the clipboard in Firefox then you need to paste that data in the other program, if that is your intention, before closing Firefox.

How can I prevent Firefox from re-installing test pilot?

I had removed the test pilot extension and its feedback button in Firefox 4.0b9. I let Firefox upgrade itself to 4.0b10 and didn't notice that silently re-installed it.
I was typing in another application when suddenly that window was minimized and the focus shifted to a Firefox "new test pilot study" window that popped up. Even if I had given permission for that software to be installed, that is rude.
I am not willing to trust that if I disable this logging software that it will stay disabled the next time I upgrade. I will remove test pilot again. '''How can I prevent Firefox from re-installing it?'''
One way might be to set extensions.rdf read-only. However, I do not wish to lose the ability to install add-ons, I merely do not want anybody (including Mozilla) to install an add-on without my permission.
https://bugzilla.mozilla.org/show_bug.cgi?id=519357 doesn't seem to address this problem as test pilot is a known component. Its not a plug-in so I can't modify the plugin scanning settings to prevent it from being loaded. Is there some way I can reliably supplement http://www.mozilla.com/en-US/blocklist/ with a local block list file? If so, would I have to update that whenever a new version of test Pilot is released?
http://support.mozilla.com/en-US/kb/Add-ons%20blocklist

I'm not sure what you mean by "re-directs e-mails." Are the recipient addresses changing between the time you address the message and the time it is sent?
If you could provide more information I think that would help in tracking this down.
When you use Firefox to work with your webmail site, whether Yahoo! or Gmail or another, the mechanics of sending the mail are handled by the site itself. So if there is a problem with how messages are addressed, then you may need to check your Yahoo! mail settings.

Saw a poss solution to my prob of loosing tab groups when closing firefox It read ". Edit Preferences Privacy "I can't find prefernces under the edit menu"

Firefox V30.0
I saw a poss solution to my prob of loosing tab groups when closing firefox It read ". Edit > Preferences > Privacy "I can't find references under the edit menu" so cannot attempt the fix offered?

Your System Details list shows that you have a user.js file in the profile folder to initialize prefs each time Firefox starts.
The user.js file is only present if you or other software has created this file and normally it wouldn't be there.
You can check its content with a plain text editor (right-click: Open with) if you didn't create this file yourself.
The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.
Delete a possible user.js file and numbered prefs-##.js files and rename (or delete) the prefs.js file to reset all prefs to the default value including prefs set via user.js and prefs that are no longer supported in the current Firefox release.
You can use this button to go to the currently used Firefox profile folder:
*Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
See also:
*http://kb.mozillazine.org/Preferences_not_saved
App (pinned) tabs and Tab Groups (Panorama) are stored as part of the session data in the sessionstore.js file in the Firefox profile folder.
You can check for problems with the sessionstore.js and sessionstore.bak files in the Firefox profile folder that store session data.
*Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Multiple_profile_files_created
Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).

How can I prevent Firefox from checking whether Adobe Flash is up to date?

I just updated Flash a week ago and already Firefox is prompting me to replace the update with the message "Firefox has prevented the outdated plugin Adobe Flash from running on" (etc.) How can I prevent Firefox (I'm using version 35.0.1) from running this check forever?

"Add-ons" is a mis-leading term, regarding what appears in the Add-ons Manager tab. "Addons" includes Extensions, Search Engines, Themes (Appearance), User Scripts, Styles, and Services - all of which the "Updates" can be controlled by Firefox preferences. "Plugins" are shown in the AOM too, but unlike the others, Firefox has no control over updates for Plugins. As James mentioned, Plugins aren't installed within Firefox as the other categories of "Add-Ons" are - and updates are controlled by the application that installed the Plugin that Firefox uses from each application's own set of folders or wherever in Windows files the Plugin is placed by the installer.
IMO, the biggest problem with Flash is that it is set by default to only look for an update once a month. So when Adobe updates Flash multiple times a month (3 "updates" in January alone) the Flash updater can'r catch each update as it occurs, or even within an acceptable "window of time". A user might "fall behind" as many as 3 new version releases quite easily.
As far as clicking to "Allow" each video when you're behind a version or two with Flash, at least Mozilla does a "soft block" and permits you to "Allow" - a "hard block" would make it impossible to use Flash at all. And "yes". Mozilla ''can do" a "hard block" when necessary.
In conclusion, Flash is a dying technology, which deserves to be buried. It is too "exploitable" by the "bad guys". All the recent "updates" are for security patches for fixing "holes" in Flash and stability fixes to an old application that "has seen better days" (like 10 years ago).
HTML5 Video looks like the future. Use it where you can, like at YouTube which gives you a choice for many videos they host - but you you need to enable that feature in Google preferences or all you're liable got get is Flash videos. With other websites, their users need to tell them that they want HTML5 videos only.

How do I prevent firefox from loading page when I type in first few letters?

I am giving my laptop to my daughter. I deleted history and emptied cache. Yet if she were to type the letter 'c', an adult site I have visited pops up - WITH MY USERNAME AND PASSWORD ALREADY TYPED IN! This gives her full access to my adult activity on the site.
How do I prevent this from happening? I want to totally remove this site from firefox's 'memory', especially the username and password.

To log you out of all websites your gonna want to clear the cookies:
* Firefox in top left corner > Options > Privacy > Show Cookies >Remove all Cookies
I would also recommend resetting Firefox if you are no longer gonna use it yourself :
* Firefox in top left corner>Help>Troubleshooting Information>Reset Firefox
See here for more information:
[[Reset Firefox – easily fix most problems]]
[[Delete cookies to remove the information websites have stored on your computer]]

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

How do get rid of a tab group without closing the tabs? How do I take tabs out of a group?

I accidentally put all my tabs in one group. I'd like to get rid of the group without closing all the tabs in it; in other words, to undo putting all the tabs in one group. It would be useful to know how to remove a tab from a group without closing the tab, accidentally putting a tab in the wrong group will probably be a common error that needs to be easily undone.

'' SisqB;''
''I searched about:config and found a listing of "stuff" under the S3 Downloads ''
Can you take a snapshot of what you see?
In order to better assist you with your issue please provide us with a screenshot. If you need help to create a screenshot, please see [[How do I create a screenshot of my problem?]]
Once you've done this, attach the saved screenshot file to your forum post by clicking the '''Browse...''' button below the ''Post your reply'' box. This will help us to visualize the problem.
Thank you!

How do I stop firefox from switching to new tab when opening bookmarks in new tab

When I open a link in a new tab it does not switch to it automatically. I had to reinstall firefox to stop it from switching to new tabs automatically since the option being unticked didn't stop it from happening anyway. Now only when I open a bookmard in a new tab it still switches to the new tab and I do not want it to. Why is it doing this with the option unchecked and a fresh install with no add ons of any sort? And how do I make it stop?

Try to set the Boolean pref browser.tabs.loadBookmarksInBackground to true on the about:config page.
*http://kb.mozillazine.org/about:config

How do I prevent Firefox from opening all tabs in seperater windows?

Every single time I open Firefox it not only opens all of my previous tabs in one window but it also opens each and every one of them is it's own separate window. As I normally work with over 60 tabs it takes several minutes for them to complete opening and is a pain. Anyone who knows how to control this please help. I've checked all of the existing issues and find it surprising I'm the only one reporting this problem.

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

How can I prevent Firefox from automatically updating?

Hello,
I am trying to prevent Firefox 28 from automatically updating to Firefox 29 (on OSX 10.7.5).
I have the option "Never check for updates" checked under 'Update' in the 'Advanced' Preferences. I have "Automatically update Search Engines" unchecked. I have uninstalled Firefox 29 completely using two separate uninstall clean-up kits and emptied the trash before re-installing Firefox 28... Yet every time I finally re-arrange, customize and re-sync Firefox 28 back to the way I like it, I restart my Mac and Firefox 29 rears it's over-drawn, bubbly, space-wasting, UN-SYNCED, ridiculous tabs on top nonsense user interface.
I've tried to work with Firefox 29 but the new SYNC simply does not work and that's a deal breaker. I need the changes I make on my mac to be reflected across the other two systems on my desk (one WinXP, one Win7) and vice versa. When I try to sync on FF29 it takes me to a page to log in and then refuses to recognize my email and password (which I have thoroughly confirmed on my other systems as correct).
Can you please help me prevent Firefox 28 from automatically updating to Firefox 29?

Thank you for your comments, cor-el.
Yes, I know about Classic Theme Restorer, but the point is what gives Mozilla the right to update my Firefox when I already have quite clearly set every option to prevent automatic updates?
I have set:
app.update.auto - false
app.update.enabled - false
app.update.silent - false
So which secret magic setting has Mozilla used to bypass all these settings and what gives them the right to do it?
Also, moving the tabs bar and menu bar and whatever else has been moved in Firefox 29 is a THEME change. It is not a security fix. Mozilla should not be in the business of changing the theme or look of Firefox. It is not their business how I want my Firefox to look.
Regarding "tabs", I have mine down the left side, so this tweaking of the tab bar position is pointless anyway.
To Mozilla, Just for absolute clarification, there is no way you can possibly justify forcing an update on users computers without their explicit acceptance.
What if someone found out how Mozilla forced the update? They could then force an update that is NOT a genuine Firefox release and do untold damage to peoples' computers.
So now I am forced to delete Firefox from my startup script and start it manually just in case their is another forced update that I can stop.
To cor-el, thank you for your post.
To Mozilla, you have lost the plot.

How can I prevent firefox from displaying an overall black page after I request a topic search in the google/firefox search box? Not able to see results

I loaded Mozilla v31 on my PC laptop which uses Windows XP operating system with all current updates. When I click on my internet icon, it leads me to the Mozilla page with a Google search bar. Once I type a topic in and click for the search to begin, the Firefox page turns all black and I am not able to see any results or action being taken. I click on the back arrow and enter a new topic, and click on search button, it repeats the same behavior and the Firefox page turns black. Essentially Mozilla Firefox is not a usable browser unless I can fix it. Help!

When this happens, has the address bar changed to a google.com address or is it still blank?
Some graphical glitches are caused by an incompatibility between Firefox and your graphics card drivers. The standard workaround for bypassing this is to disable Firefox from using hardware acceleration. You can make that change here:
"3-bar" menu button (or Tools menu) > Options > Advanced
On the "General" mini-tab, uncheck the box for "Use hardware acceleration when available"
That will take effect the next time you exit Firefox and start it up again.
More generally:
When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.
(1) Bypass Firefox's Cache
Use Ctrl+Shift+r to reload the page fresh from the server.
Alternately, you also can clear Firefox's cache completely using:
"3-bar" menu button (or Tools menu) > Options > Advanced
On the Network mini-tab > Cached Web Content : "Clear Now"
If you have a large hard drive, this might take a few minutes.
(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, try either:
* right-click and choose View Page Info > Security > "View Cookies"
* (menu bar) Tools > Page Info > Security > "View Cookies"
In the dialog that opens, you can remove the site's cookies individually.
Then try reloading the page. Does that help?

How do I prevent firefox from switching tab groups when closing a tab?

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