40.3 Firefox does not start, but older versions will be
Firefox 40.0.3 will not start or open. I Uninstaller and put on 36.0.3 and it runs. Once I go to the About tab it will automatically download the latest version. Then, when I click on Firefox icons, that nothing is happening. I repeated this process several times with the same results.
XP Pro SP3
Have you tried Mode safe mode of Firefox with normal computer?
In this case, one of the other programs on your system is causing the
problem. Look at the list of programs on your system. Anything weird?
Windows: Start > Control Panel > uninstall programs.
Mac: Open the folder "Applications".
Linux: See your user manual.
After reinstalling my system of time machine cs6 does not start, the trial opens instead. Serial number is not accepted. What should do?
I checked the serial number and found that there is a problem with the serial number.
I advise you to please call our 800-443-8158 support or start the conversation by clicking the below link
After that restart of firefox does not start. is running in the Task Manager, but won't pop up. Reset safe mode and uninstall/reinstall won't help. OK so no reset.
Win7 Pro. has worked ok firefox. but lately with 25 and 26 now, firefox does not start. I see that firefox is running in the Task Manager. but it will not just appear.
If I still download and install it, it runs, but every time I restarted the system, it just does not work yet.
Reset try:, safe mode, uninstall & reinstall, new/clean profile none of these work.
I have the latest Firefox 25.0 (and the last Flash 11.9.900.117) on Windows 7 and the following behavior is reproducible. It started not too long ago.
At first when I launch Firefox, nothing appears no matter how often, I restart. I see in the list of the process firefox.exe to 25% of the CPU, 2 x FlashPlayerPlugin_11_9_900_117.exe (CPU 0%) and plugincontainer.exe. No matter how many times I killed all of them, would not restart Firefox.
The following also not help in this situation:
- Starting in normal safe mode: Firefox opens a window but immediately freezes and does not respond. The process list shows the same process even if I find the unexpected FlashPlayer.
- Disable plugincontainer: same results (just without plugincontainer.exe)
- Uninstall Flash: Same results (just without FlashPlayerPlugin)
The following can start Firefox only once:
- Starting in SafeMode but select "Reset Firefox": Firefox does not start right away, however. Nothing happens, and you have to kill the process. However the very next time you launch Firefox in the normal way, it works fine (but it shows FlashPlayerPlugin.exe in the list of unopened Windows process despite the tab). Unfortunately, after closing Firefox the process (Firefox, FlashPlayerPlugin) are not deleted. I kill and the problem with Firefox do not leave reappears.
In case you use "clear history of Firefox closing:
- do not delete Cookies
Note that compensation "Preferences of Site" clears all exceptions for cookies, images, windows pop up, installation of software and passwords.
Use "Firefox > output" (Windows: Firefox/file > quit;) Mac: Firefox > quit Firefox. Linux: Firefox/file > exit) to close Firefox if you are currently doing by clicking on the X close in the title bar of Firefox.
Create a new profile manually (and not via the reset) as a test to see if your profile is the source of the problems.
See "create a profile":
If the new profile works then you can transfer files from a profile in the new profile, but be careful not to copy files corrupted to avoid transporting on the problem.
Firefox does not start because he says that it's another instance that runs in the background, but I checked and it is not a! I have Linux Fedora 15 and I'm not the root. I spoke to the Manager and he said I should delete a file in the folder where firefox is installed and which can solve the problem. Can you help me?
Upgrade your browser Firefox 8 and check
Firefox does not start. He claims to be already running, but that doesn't seem to be the case.
I tried to create a new user profile, but when I try to open Firefox now, the menu "choose user profile". I tried the new profile and they old, and both give the same error message. "Firefox is unable to use the"Default user"profile because it is in use. To continue, close the Runspace of Firefox or choose a different profile. »
There is an entry for firefox.exe in the menu of "details" to my task manager and nowhere else. When I try to put an end to this task, I get the following error: "the operation could not be performed - access denied."
Due to some troubleshooting research, I tried to delete the parent.lock my profile folder, but I get this error: "the action cannot be completed because the file is opened in Firefox."
I tried to transfer my bookmarks and preferences from Firefox to Chrome, but I had a similar error suggesting that Firefox was already open and I have to close first.
I also turned off my computer and uninstalled and reinstalled Firefox several times.
I'd really rather not lose all my bookmarks Firefox, modules, and preferences. I also prefer to use Firefox for Chrome, so if anyone can help me I would really appreciate it. I don't know what else to try.
My PC runs Windows 10, incidentally.
Try to delete the parent.lock file in the Firefox profile folder.
- C:\Users\ < user > < profile > \AppData\Roaming\Mozilla\Firefox\Profiles\.
What security software do you have?
Try to create a new shortcut on the desktop Firefox and maybe to reinstall Firefox via a clean reinstall (i.e. remove the Firefox program folder).
If you cannot remove the Firefox program folder and then try to rename this file to "Mozilla Firefox.old".
- (Windows 64 bit) "C:\Program Files (x 86) \Mozilla.
- (32-bit Windows) "C:\Program Files\Mozilla Firefox\"
Start the computer in Mode safe mode with network support Windows (on the startup screen, press F8) to see if that helps.
My Firefox does not start. I've tried the upgrade, the problem still persists. The icon is there, but nothing happens when I press it.
Please reinstall Firefox for Android from Google game store and see if this problem persists.
We look forward to your response.
Firefox does not start and this message keeps coming back... I uninstalled and reinstalled... but nothing helped...
EXC in ev handl: error: error definition property on NPObject!
Disable the extension "McAfee Site Advisor" who has just updated 3.4.0 that probably out of block of addons list.
- 'Ctrl + Shift + A' > find McAfee Site Advisor and use 'Disable', and then restart Firefox.
- Do a Google search without problem
- It seems that if you re - enable new Site Advisor and restart Firefox you agree. At least you know where to look if you get the error again, or research on Google to slow down.
My window 7 was not starting up properly so I did a system restore and now firefox does not start a message appears indicating "XPCOM" and I googled and all is said to reinstall Firefox. I don't usually to reinstall immediately because I need my passwords and username back. I can't find a solution on the forums, or if there is I have not found or I simply did not understand the solution itself. Please get back to me as soon as possible
Is a restoration of the system to a cancellation of the recent updates or something more radical?
You can do the following type of reinstall without touching your settings files. Important: uninstall NO Firefox first. That is not necessary.
Clean reinstall it
(1) download a fresh Installer for Firefox 36 of https://www.mozilla.org/firefox/all/ in an ideal location. (Scroll down your preferred language).
(2) the release of Firefox.
(3) to rename the program folder
(Windows 64-bit folder names)
C:\Program Files (x86)\Mozilla Firefox
C:\Program Files (x86)\OldFirefox
(Windows 32-bit folder names)
C:\Program Files\Mozilla Firefox
(4) run the installer you downloaded in the #1. It should automatically connect to your existing settings.
When you start Firefox, you may need to use the Profile Manager to return to your regular profile. Ignore: copy/paste glitch.
Note: Some plugins can only exist in this OldFirefox file. If it is missing something essential, present in these files:
Install Firefox, works great. Restart the computer, Firefox does not start, or finally when it tries to start the script errors occur. If I reinstall Firefox after restart of a computer, it works fine, once again when the computer is stopped at the next startup it is, will not be able to use Firefox. Firefox does not start in Firefox Safe mode, does not start in windows safe mode. Do not add now, nothing has been added, just the Firefox installer played complete the system restore on the computer, same problem. Windows 7 Pro. Remove Firefox from windows control panel, restart your computer, install firefox, will take place. shut down the computer, put on the computer, firefox does not start, or crashes. I am exploring now Web interface.
I reinstalled Firefox, so it will run in order to perform the steps below.
Here is the answer which took care of the problem,
"Site Web TrueSuite Log On" plugin (AuthenTec), is the question.
Firefox does not open, but is rather the error message "Unable to read the configuration file." He has worked in the past, but not now.
I REINSTALL 10 TIMES SO DON'T TELL ME THAT!
I'm piss because I need firefox work again, so I can finish my reseaching in 5 days.
Firefox will not start. I uninstalled and reinstall.
Nothing has changed. I have used Firefox for years. This first
time, I have a problem.
Have you tried to start Firefox in Mode safe? Key 'shift' startup of Firefox. If the accident is not in Mode without failure, you should read the extensions, themes and problems of hardware acceleration to resolve common troubleshooting Firefox problems.
Hope this helps!
Does anyone have ideas with the following Firefox Vista problem.
9.01 Firefox does not start, has a dialog box saying: it is still ongoing.
There is no instance of firefox in the Task Manager.
I uninstalled firefox and reinstalled both of
Desktop mode and course in vista.
I have deleted all instances of firewall.
I tried with firewall failure
Still having the same problem
Solved by uninstalling all the firefox - including my settings
I installed the new version of LIghtroom (2015) compared to the creative clouds. Creative cloud said that I installed the new version. However, the shortcut icon that has been installed does not start the new version. Also, I went to the link propertie
I installed the new version of LIghtroom (2015) compared to the creative clouds. Creative cloud said that I installed the new version. However, the shortcut icon that has been installed does not start the new version. I also went on the link properties itself, but without success in starting. How to launch the new version?
Thank you, toinimj59. I did this part and the installation is complete (there is apparently not earlier--included an acceptance of the general terms and conditions...)
Solution 1: Disconnect from the desktop creative cloud app and reconnect
- Disconnect from and to, the app Office creative Cloud click here for instructions to return in
- Launch of Lightroom.
Firefox worked, then update it does not start. I tried all the fixes; However, the Profile Manager is not accessible or even present in the execution file. I unintalled and reinstalled several times, but I still can't get it to work. There is no Windows or Norton firewall block so I do not understand. What can I do? I want to use Firefox because it's the best browser; but now I'm forced to use Oscar. It's not terrible, but I prefer the features I've had with Firefox
I had upgraded to the latest version; but the thought of demotion to the version which worked perfectly. In the end, I had to defrag, do a registry clean and optimization of performance of PC, but for the upgrade launched. So, I'm happy to say that I reply to this post with my Firefox browser. Thank you very much for your help. If all goes well, I won't have problems.
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