Can't open Firefox or Thunderbird after Window 7 update

A Kapersky update and a Windows 7 update clashed and turned off the program. I completed a system restore to two days prior, installed the update successfully, then reinstalled all the Windows 7 updates, 13 of them. Now I can't open Firefox or Thunderbird. The Properties/settings say the the Windows XP update is incomaptible with them. I'm not running XP, so I changed the settings to read Windows 7 for both programs. Still cannot open either one.

you would plug your device into your computer and back it up so you don't loose anything on it. And then in itunes there is a button to click to restore your device. This will erase your device and reinstall ios to factory settings and then from there you can load your backup to your device. This has helped me with any problems i have had with ios7
http://support.apple.com/kb/HT1414

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TS1424 I can't open the iTune store after I updated my iphone to iOS 7.

Hi there, could someone help me here please - I can't open the iTune store after I updated my iphone 4 to iOS 7. The problem occurred about 5 days later after the upgrade. There are no error messages. As I tap on the icon it opens just for a fraction of a moment and then goes off and back to the main screen. Other apps are working just fine. I tried following the troubleshooting steps as suggested by apple support, but that didn't help unfortunately...
Thank you

Refer to this article:
Can't connect to the iTunes Store
http://support.apple.com/kb/TS1368

I can not open or relaunch gmail after ios7 update. It will not let me delete app either.

I can not open or relaunch gmail after ios7 updated. I can not delete or open app even though it is showing in list of apps.

I'm having the same issue but with about 20 apps.

I can not open Firefox if Thunderbird is open , and I can not open Thunderbird if firefox is open? I am running Windows 7 Home Premium OS.

Firefox version 5.0.1 and Thunderbird 5.0

Yes, Firefox and Thunderbird are installed in separate folders and their one profiles.
I have found that if I have one or the other program open, I can open the other if I hold the Control key down. I am thinking that the problem has something to do with the Panicware Pop-up stopper, Free edition that I am running on that computer. Any thoughts?
Freddyt55

I can't open javascript:void(0) after I update to firefox 3.6.21

at first the plugin java development toolkit was disabled by firefox,I checked java website and upgrade to newest version, the plugin was enabled. however, I still can't open any links which shows javascript:void(0) . please help me solve this problem

To avoid confusion: http://kb.mozillazine.org/JavaScript_is_not_Java
* https://support.mozilla.com/kb/JavaScript
Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
You have a corrupted user agent that identifies you as Firefox/3.5.7
*Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.21) Gecko/20110830 Firefox/3.5.7;MEGAUPLOAD 1.0
See:
*https://support.mozilla.com/kb/Websites+or+add-ons+incorrectly+report+incompatible+browser
*http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default

Can't open Firefox : I get a window saying another copy of firefox is open . MAC OS10.6.4 , which is not the case . MAC OS 10.

I F I WANT TO OPEN FIREFOX A WINDOW POPS TELLING ME THERE IS ANOTHER COPY OF FIREFOX ALREADY OPEN AND I CAN'T GET TWO COPIES OPEN AT THE SAME TIME . I DELETED FIREFOX AND DOWNLOADED AGAIN , TO NO AVAIL. THE MESSAGE POPS OUT EVERY TIME I WANT TO OPEN FIREFOX .

See [[Firefox is already running but is not responding]] and http://kb.mozillazine.org/Profile_in_use for common causes and solutions.

Firefox 6 freezes after windows updates

when windows updates with browser open firefox freezes , i cannot open bookmarks or enter text in google search field until i refresh the browser,this issue only occurs immediately after running windows update

See [http://mzl.la/LIoF7y Adobe Flash plugin has crashed - Prevent it from happening again] - Solution 2 Downgrade to Flash 10.3.
I uninstalled Flash Player and Flash Plugin using Windows Control Panel (Programs and Features) then installed Flash Player 10.3.

I just updated firefox TODAY 8/17/11 and after the update i can't open firefox unless i restart my computer or i delete going to windows task manager and process, also i can't open a new window, it won't allow it. please can you help me

I just updated firefox TODAY 8/17/11 and after the update i can't open firefox unless i restart my computer or i delete firefox going to windows task manager and process, also, i can't open a new window, it won't allow it. please help me, everything works on IE, Google Chrome and Safari, everything went wrong after the update

Hey Elaine07!
I have an article here that can help you with that issue. This article will help you make sure you have uninstalled iTunes correctly and help you troubleshoot the launch issues you are seeing:
iTunes for Windows Vista or Windows 7: Troubleshooting unexpected quits, freezes, or launch issues
http://support.apple.com/kb/ts1717
Take care, and thanks for visiting the Apple Support Communities.
-Braden

Today I think firefox automatically installed a new version and after that it said my adobe flash was old so I had to update that. Now I can't open links in a new window.

Today I think firefox automatically installed a new version and after that it said my adobe flash was old so I had to update that. Now I can't open links in a new window.

Firefox doesn't install new versions of plugins, but Flash may update itself automatically. 
You are still one version behind on Flash, current is Flash 10.1 r85 
If the Flash player didn't update properly then you need to download the full version and run the installer as Administrator (right-click: Run as ...)
Flash Global Notifications Settings Panel: 
*http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager05.html
You are more versions behind on Java updates with having Java 6 U11, current is 6 U22.
*Java Plug-in 1.6.0_11 for Netscape Navigator (DLL Helper)
Update the [[Java]] plugin to the latest version.
*http://java.sun.com/javase/downloads/index.jsp (Java Platform: Download JRE)

Operating System Window XP Professional. I can not open Firefox. I have reset it and it worked for a few days. Now I can not execute it. Appreciate help.

Can not execute Firefox. So I updated it and reinstalled it. Then I reset it. For a couple days it worked fine. Now I am back to square one. Can not open firefox again.

Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox and any leftover program files and then reinstall Firefox. Please follow these steps one by one:
#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) and confirm all upcoming messages.
#Now, uninstall Firefox by following the steps mentioned in the [[Uninstall Firefox from your computer#w_uninstall-firefox|Uninstall Firefox]] article.
'''IMPORTANT:''' On Windows, the uninstaller has the option to remove your personal data and settings. Make sure that you do '''not''' check this option; otherwise all of your bookmarks, passwords, extensions, user customizations and other Firefox [[Profiles|user profile data]] will be removed from your computer.
After uninstalling Firefox on Windows, delete the "Mozilla Firefox" program folder, located by default in one of these locations:
* '''(On 32-bit Windows)''' ''C:\Program Files\Mozilla Firefox''
* '''(On 64-bit Windows)''' ''C:\Program Files (x86)\Mozilla Firefox''
#Go to the Windows Start menu and click on "Computer".
#In the Explorer window that opens, double click Local Disk (C:) to open the C:\ drive.
#Find the "Program Files (x86)" folder or "Program Files" folder.
#* On 32-bit Windows, double-click the '''Program Files''' folder to open it.
#* On 64-bit Windows, you will see a "Program Files (x86)" folder AND a "Program Files" folder. Open the '''Program Files (x86)''' folder.
#Look for a '''Mozilla Firefox''' folder. If you find one, right-click it and select ''Delete'' and confirm that you want to move the folder to the Recycle Bin.
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.
Please report back to see if this helped you!

After install "4share" programme then I can't open Firefox 5

after install "4share" programme then I can't open Firefox 5 and ha

Do a clean reinstall and 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.
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.
You can initially skip the step to create a new profile, that may not necessary for this issue.
See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall
http://kb.mozillazine.org/Profile_backup and [[Backing up your information]]

After having a virus, my PC can't open Firefox from the icon anymore. Help!

I can still open firefox from a hyperlink I have in a word document. But this isn't a long-term solution. Uninstalling and reinstalling firefox didn't solve the problem either. When I click on the firefox icon I get "This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator."
== This happened ==
Every time Firefox opened
== After Antivir removed the virus "Win32/Cryptor" virus

You may have the fake anti virus software "Antivir solution pro" Nasty malware. Google that if it hasn't comandeered your browsers. (Changes them to use proxy server), Here's one helpful link:
[http://example.com http://example.com|http://deletemalware.blogspot.com/2010/07/how-to-remove-antivir-solution-pro.html]
May need to start up in Safe Mode with Networking. Good Luck

Hi I have been using Thunderbird and Firefox for at least seven years. I do not like Outlook or Internet Explorer. However, I had to sync my PDA phone today with Outlook and now I can't open Firefox at all. I get an error that says:

I had to sync my PDA phone today with Outlook and had to create an account in outlook , but only for the contacts and calendar. But after synching the phone, can't open Firefox at all. I get an error that says:

i wish i could paste the error message but it is

I can't open Firefox no more, I try clicking on the icon but it doesn't even load anymore.

After some time I realized I can not open Firefox anymore.
I have always used Firefox as my default browser and I really like their features, it's the best browser for me, but for 2 weeks I haven't had the possibility to open it.
I have tried many ways, such as try to open new tab, or try to open new windows, or try to open new private session but none worked. It's impossible to load Firefox. I have been searching on different sites to finally resolve my problem but it didn't help me at all.
I also reinstalled it many times but the same problem.
Thanks in advance and any help will be welcomed.

sorry for the inconvenience caused to you. This may not be a problem with the fire fox instead this may be a problem with your computer.
Plz check your computer for virus mainly "Trojan". download an antivirus and run a full scan and also be updated to latest fire fox version.

Everytime I open firefox I get a window that opens. Doesn't happen with IE or Chrome

Every time I open Firefox I get another window that opens over the homepage. It is almost blank with a few lines at the top of the page and the words user registration. It has been happening ever since Firefox updated on my computer yesterday, even after uninstalling and reinstalling.

'''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* You can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Once you get the pop-up, just select "'Start in Safe Mode"''
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''

Can't open Firefox or Thunderbird after Window 7 update

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