I had Firefox running with probably 8 windows. I closed them all, plus other programs and rebooted the machine. After that Firefox wouldn't start. I have uninstalled and re-installed twice. The Profile manager won't run ... so I manually removed the preferences. I have tried clicking on the desktop icon, right clicking, right-clicking the firefox.exe entry in the file manager. And nothing happens. The firefox.exe *32 process appears in the task manager ... but the program isn't running. Absolutely nothing happens.
I am running Win 7 on a ACER laptop with an I5 processor and 4Gb of memory.
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:
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 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:
Now, go ahead and reinstall Firefox:
Please report back to see if this helped you!
I followed your instructions ... multiple times ... to no effect. The Firefox.exe *32 process appears in Windows Task Manager (multiple times). But the program never initiates. Help,PLEASE! I am reduced to using IE.
Can you start Firefox in Safe mode?
You can use one of these to start Firefox in Safe mode:
A possible cause is security software (firewall,anti-virus) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
Firefox now starts up and works pretty well. But it keeps crashing with a problem in ntdll.dll. I have tried to update this dll... but I can't find out how to do this. Can you help?
We're sorry to hear that your Firefox seems to be crashing. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.
Thanks in advance for your help!
More information and further troubleshooting steps can be found in the Firefox crashes - Troubleshoot, prevent and get help fixing crashes article.
These reports were never sent to Firefox. Firefox also doesn't completely shut down when it crashes. firefox.exe *32 remains running ... often multiple times. If I want to restart Firefox, I have to use the task manager to stop this process before Firefox will start again. The above reports are in the Pending folder and there are only these four. PS: I have reinstalled Firefox a number of times. Mary
Any update on a resolution? I also have an XP user that had their Firefox stop working. Click on icon and it never opens but does start firefox.exe process in tast manger. Tried uninstalling as admin, deleting all Mozilla folders and reg keys, and rolling back OS 10 days to when user said it was working... nothing has worked so far. Also ran 1 virus scan that came back clean.