Firefox 28 has double of all bookmarks, deleting one deletes both

I have "Bookmarks Toolbar" and "Bookmarks Menu" both listed twice in my side bar (what appears when you hit "cntrl-b" and I cannot delete the duplicates, it deletes both versions. I have uninstalled and re-installed FF, and also tried resetting all settings in about:suppport.
I have Windows 7, and the add-ons I have are adobe acrobat pro, roboform, tab mix plus, accuweather and adblock plus. Although the problem persisisted when all of these add-ons were disabled during the reset.

You can see the number of bookmarks in a JSON backup file as part of the file name (xxxx in bookmarks-####-##-##_xxxx.json), so take the one with the largest number if there are differences.
*Bug 812348 - Firefox Sync duplicating and scrambling bookmarks & folders
Please do not comment in bug reports https://bugzilla.mozilla.org/page.cgi?id=etiquette.html

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Upgrade to Firefox 11 and lost all bookmarks.

I have upgrade to Firefox 11 and lost all bookmarks. None of the on-line articles help. Please advise on how to recover the bookmarks. I have tried to go to the pages that I use and it will not let me bookmark them.
''[Personal information removed by moderator. Please read [[Forum and chat rules and guidelines]], thanks.]''

If you open your current profile folder, do you have a bookmarkbackups folder in there?
Help > Troubleshooting Information > Open Containing Folder button
If so, copy those somewhere safe before proceeding.
If not, do you ever back up your profile folder?
You also might navigate up a level and see whether you have any other Firefox profiles.
If you cannot save any new bookmarks, I wonder whether your places.sqlite file (stores history and bookmarks) in your profile has become corrupted. You might need to rename that file and allow Firefox to create a new one before you can save new bookmarks again. I wouldn't delete the file just yet, as it might contain some useful stuff.

Firefox has been crashing all the time after I updated to the newest version. I tried to uninstalled firefox and all addons. Restarted the computer to reinstall Firefox and it's still crashing all the time. Please help.

Firefox has been crashing all the time after I updated to the newest version. I tried to uninstalled firefox and all addons. Restarted the computer to reinstall Firefox and it's still crashing all the time. Please help.

https://support.mozilla.com/en-US/kb/Firefox%20crashes#w_get-help-fixing-this-crash
Type '''about:crashes''' in the URL bar and hit Enter. 
Click the hyperlinks to bring up the Crash Report pages and copy'n'paste the URL of each of those reports into the message box here. We'll see if we can help you figure out what is causing those crashes to happen.

Firefox has trouble with all flash applications

My favorite forum website recently dropped support for IE. This specific reason, is the ONLY reason I stopped using IE. Firefox has a much closer resemblance to IE than chrome, and this is the ONLY reason I chose it over chrome.
Everything works fine, except every and all flash applications.
Youtube, animated ads, games... everything causes huge cpu load spikes and lags like crazy (I'm sure it would cause a crash on a basic computer). I have a very high end rig, the problem is not my hardware, or internet speed (100mbs). It is entirely fire fox.
All flash apps work FINE on IE/chrome, I tested them. Please offer support, thank you.

Crashes or other problems with certain multimedia content in Firefox (such as Youtube videos and Flash animations or games) can often be resolved by performing the steps in these Knowledge Base articles:
* [[Flash Plugin - Keep it up to date and troubleshoot problems]]
* [[Flash 11.3 crashes]]
* [[Flash 11.3 doesn't load video in Firefox]]
On Windows Vista and above, you can disable Flash protected mode by following the instructions on these pages:
* http://forums.adobe.com/thread/1018071#TemporaryWorkaround
* http://kb.mozillazine.org/Flash#Disabling_Protected_Mode_in_Flash_11.3
(See [http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html this Adobe blog post] for technical details about Flash protected mode.)
For recent updates for Adobe Shockwave Flash, please update your version to 14.
Please refer to the security updates [http://helpx.adobe.com/security/products/flash-player/apsb14-18.html and Adobe Security Bulletin] for more information.


Please tell us if this helped!

Firefox has started blocking all incoming photographs in emails-how can I stop it?

Recently, Firefox has started blocking incoming photographs within emails, even those from trusted friends.
If I open the email in Internet Explorer the images are there within the email.

Which web based mail service are you using?
If images are missing then check that you aren't blocking images from some domains.
*Check the permissions for the domain in the current tab in "Tools > Page Info > Permissions"
*Check that images are enabled: Tools > Options > Content: [X] Load images automatically
*Check the exceptions in "Tools > Options > Content: Load Images > Exceptions"
*Check the "Tools > Page Info > Media" tab for blocked images (scroll through all the images with the cursor Down key).
If an image in the list is grayed and there is a check-mark in the box "Block Images from..." then remove that mark to unblock the images from that domain.
Make sure that you do not block third-party images, the permissions.default.image pref should be 1.
There are also extensions like Adblock Plus (Tools > Add-ons > Extensions) and security software (firewall, anti-virus) that can block images and other content.
See also:
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
*http://kb.mozillazine.org/Images_or_animations_do_not_load

Starts to load homepage, then Windows message: "Firefox has stopped working" All this after a Firefox update

Directly after an update, Firefox will no longer start. It begins to load my homepage, then fades away with the Windows message "Firefox has stopped working"
Looking at Norton security history, I see it blocked plugin-container.exe about the time the update was being downloaded.

I don't know if this is exactly the same problem, but here's what happened to me:
One day when I opened Firefox I got a prompt for updates. I got upgraded to version 3.6.16. That was over a week ago. This morning, I opened Firefox, got a prompt for updates, clicked ok, and I ended up upgrading again to 3.6.16. Norton gave me a notification about some file being used by fewer than 100 people and having "medium risk", but I wasn't able to take any action, just read.
Once that upgrade went through every time I tried to open Firefox, it'd pop up, I'd click no to "Do you want Firefox to be your default browser" and then it'd go white and freeze up. I'd get a message from Windows that there's a problem, Firefox has stopped working, it will be closed. No information was sent regarding the problem.
When I'd open Firefox I'd see two tabs: one about the upgrade to 3.16.6 along with an invitation to upgrade to version 4, and another being my homepage to yahoo.com.
I also have Internet Explorer, so I opened that, went to Firefox's website and downloaded version 4. So far that has taken care of the problem~I can use Firefox again.
However, I did have a couple small difficulties while downloading version 4. Right off it would not immediately start running. That was blocked by my Norton. So I had to click on "click here". Also during the process I got a message about two add-ons being incompatible, so they were disabled, and no updates could be found. They were: Microsoft .NET Framework Assistant 1.2.1. and Norton Toolbar 4.6.
I worried it was a virus but it seems like more of a compatibility problem involving maybe Norton? I have the 2010 version and haven't upgraded to Norton 2011 yet.
Anyway, like I said, so far version 4 is working fine, but I thought I'd pass on the incident.

Can I open multiple bookmarks at a time like on the desktop version of Firefox has Open in All Tabs?

The desktop version of Firefox allows me to open multiple bookmarks at a time when they are all in a particular folder. I cant seem to find a place that allows this in Firefox Beta. Does it even exist and if not please tell me you plan on adding it.

You can modify the pref keyword.URL on the about:config page to use Google's "I'm Feeling Lucky" or Google's "Browse By Name".
* Google "I'm Feeling Lucky": http://www.google.com/search?btnI=I%27m+Feeling+Lucky&ie=UTF-8&oe=UTF-8&q=
* Google "Browse by Name": http://www.google.com/search?ie=UTF-8&sourceid=navclient&gfns=1&q=
* http://kb.mozillazine.org/keyword.URL
* http://kb.mozillazine.org/Location_Bar_search

Firefox has disappeared! All my bookmarks are on firefox!!!! What do I do?

I click on Firefox and I get nothing. . . . just gone!!!!!!!! Bookmarks show up on tools but nothing. Firefox not connect me to internet!

Dose the Firefox icon show up on your taskbar with the other programs?
When you click the icon, what happens?
Do you get any kind of message?

Firefox has created thousands of bookmarks, sync is slow, FF is slow, FF freezes

I can't delete bookmarks by the traditional means since it freezes FF.
I need to mass delete these bookmarks AND I need to purge my new FF Sync account. How can I do that? The old sync allowed you to purch bookmarks in the cloud.
The large amount of bookmarks are all "Mozilla Firefox" folders. It's impossible to delete them all.
I use sync wth 3 computers (2 offices, 1 noteboook), 3 iOS and 1 Android device. It's a nightmare!

This has helped a lot with a lot more resources. The add on I ultimately used successfully was the SQLite Manager. I went in and did a mass delete of all the duplicate bookmarks. There were over 10000 of them that caused problems with the freezing and synch. I could not use the "Show your bookmarks" button on FF because of the large number.
All of the duplicated bookmarks were "Mozilla Support" folders. I think there is a larger problem with sync. I have 3 computers and 4 devices that sync and I suspect that when there are updates, whether it's FF, Windows OS updates, re-installs or anything, the Places file grows over time. This problem became most apparent when moving to the new sync. Due to geography I couldn't put all my devices on the new sync simultaneously. Maybe it's something about the old and new sync when devices are split? Very strange.

We upgraded Firefox, or tried, now all bookmarks are gone.

My wife tried to upgrade the Firefox and after she thought she had, she mentioned that all of her bookmarks were gone. I"m just trying to figure out if gone for good, or can we retrieve something?

Common Questions after Updating Firefox - Where are my Bookmarks?
* https://support.mozilla.com/en-US/kb/common-questions-after-updating-firefox#w_where-are-my-bookmarks
Lost Bookmarks
* https://support.mozilla.com/en-US/kb/Lost%20Bookmarks
* http://kb.mozillazine.org/Lost_bookmarks
Check and tell if its working.

Mac OS X 10.9.5 - Firefox 32.0.3 all bookmarks vanished

I was browsing in my everyday way last night, and suddenly, all 300 or so bookmarks vanished.
I tried most of the online fixes, but they had no effect. That's a whole year of bookmarks!

You can check for problems with the places.sqlite database file in the Firefox profile folder.
*http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
*https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file
*Places Maintenance: https://addons.mozilla.org/firefox/addon/places-maintenance/
You can also try to restore an older copy of the places.sqlite file from the Time Machine.
*https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile

For the first time ever... firefox has been crashing all day... is it suddenly not compattable with my windows 7? or what is going on? which version would work best for me?

today for the first time ever... firefox will not work.. it constantly is going to not responding... and i have never had this problem before... is it suddenly not compatible with windows 7? what is best suited for windows seven users?

Drrhythm2 wrote:
What's the best solution for this? I
Copy the entire /Music/iTunes/ folder from her old compouter to /Music/ in her account on this new computer.

Why is the message 'Plugin container for Firefox has failed' while using ArcadeOX appearing even after un/reinstalling it all?

I am attempting to play online games using the 'ArcadeOX' plugin.
The game will not load and a window pops up with the message 'Plugin container for Firefox has failed'.
I have uninstalled and reinstalled both ArcadeOX and Firefox several times and still have the same problem.
Windows 'attempts' to find a solution online but still nothing.

I am attempting to play online games using the 'ArcadeOX' plugin.
The game will not load and a window pops up with the message 'Plugin container for Firefox has failed'.
I have uninstalled and reinstalled both ArcadeOX and Firefox several times and still have the same problem.
Windows 'attempts' to find a solution online but still nothing.

"Show All Bookmarks" is not showing all bookmarks

upgraded to FF 4. When clicked, Bookmarks Toolbar button shows various bookmark folders with all of my bookmarks. It also shows the "Show All Bookmarks" option. When that is clicked the "All Bookmarks" folder is empty and I cannot organize any of the bookmarks which are in the main menu.
Also, the other Bookmarks button which used to show all my bookmarks is now empty - it just shows "search".
Deleted localstore.rdf and no change.

After numerous reinstalls failed to solve this problem, I discovered that on my system, it has to do with using an external monitor (via DVI port). When I drag the Firefox window from my laptop screen to an external monitor, "Show All Bookmarks" is suddenly empty. Dragging the browser window back to the original display (laptop) does NOT fix it. Firefox must be RESTARTED on the original display. When Firefox re-opens, "Show All Bookmarks" functions normally again.
WORK AROUND: the only way I can view "Show All Bookmarks" on my external monitor is to first open both the browser and "Show All Bookmarks" windows on the original display, drag BOTH windows to the other monitor and be sure to leave the "Show All Bookmarks" library window open in the background. If I forget and close it by accident, the problem happens all over again.

Can't hide "Show All Bookmarks" in bookmarks menu in Fx 30

Before, in Fx 29, I was able to hide the "Show All Bookmarks Ctrl+Shift+B" link in the bookmarks menu by adding this line of code into my userChrome.css file:
#BMB_bookmarksShowAll { display: none !important; }
With Fx 30, however, this does not seem to work. I am trying to hide that link in the menu that pops up when using the bookmarks button, not the menu bar. Thanks!

Current Firefox releases have two of those "Show All Bookmarks" items: one on the top and one at the bottom of the list.
<pre><nowiki>@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */
#BMB_bookmarksShowAllTop, #BMB_bookmarksShowAll { display:none!important; }
</nowiki></pre>
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Firefox 28 has double of all bookmarks, deleting one deletes both

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