After reinstalling firefox I connected it to my sync account. Instead of downloading data from server firefox uploaded it and erased all info.

How to rollback my sync account to a previous version?

Sync isn't meant to be used for backups, nor is there a way to "roll back". It's only meant for synchronizing Firefox data from 1 device to another.

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A few selection of websites after fully loading become blank and start an infinite loop of loading. I reinstalled firefox once already and the problem persists. What can I do?

A few selection of websites after fully loading become blank and start an infinite loop of loading. I reinstalled firefox once already and the problem persists. What can I do?

Sorry I do not know what the problem may be. 
If no-one comes up with better ideas of what causes this then my questions and suggestions:
What do you mean by an infinite loop ? 
The page loads and then goes blank. What exactly happens next, does the page fully load and fully display again before going blank, and repeat this cycle endlessly in the same tab.
You do say the problem persisted in safe-mode and you had looked at the basic troubleshooting article. Buy that you can stop the problem by disabling javascript.
* did you disable all plugins - and did you still get the problem then ?
As you mention disabling javascript stops the problem, have you tried with Java script enabled but
* block popups ON
* load images automatically OFF
* advanced options - ALL OFF What happens do you get the problem then or not.
While on this firefox site if I look at the error console Ctrl+Sift+J or Tools -> Error console If I clear the console content and reload the webpage the error console shows only a couple of messages. YouTube home page give a lot of yellow triangle warnings about 200, but no red warnings, do you get red warnings.
You could also try on the problem sites eg YouTube changing the permissions with tools -> Page Info | Permissions
Did you try the Basic Troubeshooting suggestion of making a new profile. (Heeding the warning not to delete settings, otherwise you loose all bookmarks etc) did that help ?

I deleted my entire upper set of tabs - Bookmarks, Tools and more. I reinstalled Firefox 3 times and it's still gone.

I was deleting addons and I deleted the main top tabs by accident. I deleted my entire upper set of tabs - Bookmarks, Tools and more. I reinstalled Firefox 3 times and it's still gone.

For details of how to restore it, see https://support.mozilla.com/kb/menu+bar+is+missing

Refreshed Firefox and got all info back EXCEPT Yahoo!!! Yahoo doesnot not recognize me or my accounts and the Format is all messed up. How do I fix Yahoo on the

Refreshed to Firefox 36.0 and got all my info back EXCEPT that when I try to go to Yahoo, it does not recognize me, my computer or my accounts. Along with that the formatting is all screwed up, everything appears in stringlike fashion.
Anybody know how to fix or get Firefox 35 back?

Do you mean you used the Refresh features that flushes out your old settings (and creates the Old Firefox Data folder on your desktop), or you updated from Firefox 35.0.1 to Firefox 36.0?
Have you noticed any certificate errors on websites? Sometimes if you have created an exception to get around a certificate error you get partial loading because the site uses multiple different secure servers and there's no user interface for making exceptions for the other servers. Anyway, exceptions shouldn't be needed for well-run sites.
This is general advice, but just in case:
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"
* Alt+t (open the classic Tools menu) > Page Info > Security > "View Cookies"
In the dialog that opens, you can remove your yahoo.com cookies individually.
Then try reloading the page. Does that help?
In case one of your extensions is involved, could you test the site 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?

On Win 7 64 bit, Firefox 7, 8 and Nightly all refuse to see Flash. I have uninstalled, installed Flash 11 several times and FF just doesn't see Flash. Anyone got a fix?

On Win 7 64 bit, Firefox 7, 8 and Nightly all refuse to see Flash. I have uninstalled, installed Flash 11 several times.

There are two different versions of Flash, the '''''ActiveX''''' version for IE and the '''Plugin''' version used by most other browsers.
1.Download the Flash Plugin version setup file from here: 
[http://fpdownload.adobe.com/get/flashplayer/current/install_flash_player.exe Adobe Flash - Plugin version]. 
Save it to your Desktop. 
2. Close Firefox using File > Exit 
then check the Task Manager > Processes tab to make sure '''firefox.exe''' is closed, 
{XP: Ctrl+Alt+Del, Vista: Shift+Ctrl+ESC = Processes tab}
3. Then run the Flash setup file from your Desktop.
4. Start Firefox and test your installation here: https://www.adobe.com/software/flash/about/
* On Vista and Windows 7 you may need to run the plugin installer as Administrator by starting the installer via the right-click context menu if you do not get an UAC prompt to ask for permission to continue (i.e nothing seems to happen). 
See this: 
[http://vistasupport.mvps.org/run_as_administrator.htm]

HT201210 iPad tried to update lastest version 6.01 and lost all info. Told to restore but it gives a failed message - try later! Tried 5 times no luck after checking the 5 steps.Help?

Tried to update lastest version 6.01 on iPad i have had for a month and lost all info. Told to restore but it gives a failed message - try later! Tried 5 times no luck after checking the 5 steps.Help?

Latest version is 6.1 now. Try a direct download of the IOS file and load that via iTunes. Mentioned on some of the other threads here.

Dear Sir or Madam, I have got my iPhone cleaned all paid apps after I have this PC signed up for more sync PCs. How can I retrieve my paid apps accounts or I do have to buy it once more and lose my info completely?

Dear Sir or Madam, I have got my iPhone cleaned all paid apps after I have this PC signed up for more sync PCs. How can I retrieve my paid apps accounts or I do have to buy it once more and lose my info completely?

Downloading past purchases from the App Store, iBookstore, and iTunes Store - http://support.apple.com/kb/ht2519 - enabled with iTunes 10.3 and newer; not available in all countries; apps, books (not audiobooks), music, t.v. shows, and movies (some - not all studios have permitted this). Movies currently available in the USA only. Downloading previously purchased movies and TV shows requires iTunes 10.6 or later. Discontinued items not available. For items not included in the iCloud list, or locations or computer systems where iCloud is not (yet?) available, you only get one download per fee paid. Apple notes it is your responsibility to back up your purchases.
Select the store on the left side of iTunes.
Click on Purchased on the right side under Quick Links.
You can re-download your available previous purchases.

After reinstalling firefox 4.0.01 I cannot reinstall delicious tag button

4.0.1 was working great. Upgraded to firefox 5. when I tried to log on to many sites firefox would say loading site for an hour or so and never load site. After it stuck on one site no sites would load. Close firefox and try to reload and get message firefox was already running. Task manager could not shut it down so I would have to reboot. I unistalled firefox 5 and reinstalled firefox 4.0.1. Now firefox 4.0.1 is sometimes doing the same thing as 5. before upgrade 4.0.1 was working great. I need to reinstall delicious bookmark extenson for firefox for work. When I go to the website firefox just says loading but never completes. any help would be appreciated. I am limited to IE for most of my internet surfing now because I use my computer for work and cannot be rebooting my computer 10 times a day.

I had the same problem. I'm running 10.5 but on a Motorola chip. The Firefox download page is not clear on OS and machine requirements. To fix the problem, trash the newly installed Firefox 4. Download Firefox 3.6.16 and reinstall. All of your preferences and bookmarks will still be there as they are contained in a different place. Hope this helps.

My flash player plugin has completely stopped working even after reinstalling firefox and flash

i have updated flash player, updated firefox, updated windows and pretty much anything i can think of . even then still i kept seeing the grey box telling me flash plugin has crashed. so i reinstalled flash and reinstalled firefox and still keep getting the same grey box saying flash has crashed

We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash IDs to help us learn more about your crash.
#Enter ''about:crashes'' in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
#Copy the '''5''' most recent Report IDs that start with '''bp-''' and then go back to your forum question and paste those IDs into the "Post a Reply" box.
''' Note:''' If a recent Report ID does not start with '''bp-''' click on it to submit the report.
(Please don't take a screenshot of your crashes, just copy and paste the IDs. The below image is just an example of what your Firefox screen should look like.)
;[[Image:aboutcrashesFx29|width=500]]
Thank you for your help!
More information and further troubleshooting steps can be found in the [[Firefox crashes - Troubleshoot, prevent and get help fixing crashes]] article.

After installing Firefox 6.0 and attempting to open the browser I get: Error: Platform Version '5.0.1' is not compatible with MinVersion = 6.0 MaxVersion = 6.0

I am running a Windows 7 computer with ZoneAlarm internet security.

That can happen if the updater wasn't able to update (replace) all the files in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* Do not remove personal data when you uninstall the current version.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
* 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 in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile 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.

After installing Firefox 5.0 and attempting to open the browser I get: Error: Platform Version '2.0.1' is not compatible with MinVersion = 5.0 MaxVersion = 5.0 At the top of the message is Yul Runner

While installing Firefox 5.0 and attempting to open the browser I get: Error: Platform Version '2.0.1' is not compatible with MinVersion > = 5.0 MaxVersion < = 5.0
Above the message in the border was XULRunner

That can happen if the updater wasn't able to update (replace) all the files in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* Do not remove personal data when you uninstall the current version.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
* 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 in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile 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.

I want to reinstall Firefox without addons and plugins but keeping bookmarks

I have 4.0.1 installed but somehow it interferes with Skpye and I want to reinstall both

Hello,
Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:
'''Note:''' You might want to print these steps or view them in another browser.
#Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
#After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
#Delete the Firefox installation folder, which is located in one of these locations, by default:
#*'''Windows:'''
#**C:\Program Files\Mozilla Firefox
#**C:\Program Files (x86)\Mozilla Firefox
#*'''Mac:''' Delete Firefox from the Applications folder.
#*'''Linux:''' If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see [[Installing Firefox on Linux]]. If you downloaded and installed the binary package from the [http://www.mozilla.org/firefox#desktop Firefox download page], simply remove the folder ''firefox'' in your home directory.
#Now, go ahead and reinstall Firefox:
##Double-click the downloaded installation file and go through the steps of the installation wizard.
##Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
More information about reinstalling Firefox can be found [https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems?esab=a&s=troubleshooting&r=3&as=s#w_5-reinstall-firefox here].
WARNING: Do not run Firefox's uninstaller or use a third party remover as part of this process, because that could permanently delete your Firefox data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be recovered unless they have been backed up to an external device!
Please report back to see if this helped you!
Thank you.

I uninstalled firefox then reinstalled firefox...but lost all my bookmarks with the new reinstalled version. Please advise me how to recover my bookmarks.

I uninstalled firefox then reinstalled firefox. because I did not like a couple of add-ons that I wanted to remove. I thought I would still have all of my bookmarks. However, all my bookmarks were cleaned out with the new installed version. Then I tried to Repair Windows in System Restore to back track a few days in hope to recover the old version of firefox. It did not get back the old version and no bookmarks. I still get the new version with no bookmarks. Please advise me how to recover my bookmarks.

A possible cause is a problem with the file places.sqlite that stores the bookmarks and the history.
* http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox

After installing Firefox 4, Hotmail Page lost all it's formatting

After installing Firefox 4, my Hotmail "home" page lost all it's formatting. The Hotmail/Live logon screen is normal, but after logging on I see all the links and such in one long line down the left of the page. If I click on any of the links, like to go to my Inbox or Calendar, the resulting pages have the same problem. I've cleared cache and such and tried again, but same problem.
Everything works fine in Firefox 3.6 and I.E. 8.

When it comes to a security issue, shouldn't firefox work out the kinks before issuing an update rather than forcing other programs to adjust to firefox? This is a pretty arrogant opinion. WE are your customers and deserve better service than this!

I opened Firefox one day and lost all my gadjets or"stuff" . Help

All that is showing is the background theme at the top and the lower 2 thirds of the screen is blank. I had upgraded to version 4 on my windows 7 desktop and it worked good for a couple of weeks. I checked my xp pro laptop and it was also empty. I then installed version 4 on my xp pro laptop and it is still empty. The problem is on both computers. I'm not sure how to get my original setup back. There is not even an icon where I can click to "add stuff".

Several of your plugins are out of date and will have exposed your system to a number of exploits.
In the circumstances, I would recommend reinstalling Firefox. Here are the necessary steps for a clean installation.
Go to [http://www.mozilla.com/en-US/firefox/fx/?ref=logo Download Firefox 4.0] and download a fresh installation file to the desktop.
Then go to Add/Remove Programs, scroll down to '''Mozilla Firefox''' and remove it, choosing to keep your bookmarks, customizations etc., (don't checkmark the box).
Then reboot and delete the folder called '''Mozilla Firefox '''at this location: ''C:\Program Files\Mozilla Firefox''
Finally run the installation file you downloaded.
After you complete the installation, go to the [http://www.mozilla.com/en-US/plugincheck/ Plugins Check] page and update any which show up in either yellow or red.

After reinstalling firefox I connected it to my sync account. Instead of downloading data from server firefox uploaded it and erased all info.

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