Firefox 4. will not run on my pc

I niaively upgraded to version 4 but all I can do is open it. Then it freezes every time with (not responding) message at the top of the page.
Quite apart from not liking the new layout I'm seriously teee'd off with it.
What is wrong & how can I fix it. Please be advised that I'm pretty thick & any proffered solution will have to be simple to understand.
I'm using Norton360

I received updating for firefox 4. After installing, i saw only "Work offline mode" on screen as no connection. Then i used Windows Explorer, I recognized that Firefox had error in my PC. This is my first dissapointed about FFox.

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Firefox 4 will not run Norton safeweb app. How do I get it to run it?

When I ran FF4 for the first time, I got an error message saying that Norton Security is not compatible. When will this be resolved? I cannot browse web without protection. You are on the verge of losing a loyal follower.

See [http://community.norton.com/t5/Norton-360/Help-with-FF4-Compatibility-Update/m-p/433716/message-uid/433716/highlight/true#U433716 Help with FF4 Compatibility Update]
As a workaround, install this add-on which allows you to right click and scan links you're unsure about: https://addons.mozilla.org/en-US/firefox/addon/drweb-anti-virus-link-checker/
Presumably, Norton will eventually get their act together and release a patch shortly.

How do I retain Mozilla Firefox but DITCH (please!) Bing as search engine? I love Google; and love Mozilla Firefox, but will not run Firefox if Bing is now required search engine!

After uploading FLV media player last night, I found that "Bing" had taken over my PC. I do not want "Bing" as a search engine; I don't want it installed on my computer. I do not even want it displayed as an option! Mozilla with Google is outstanding, and I depend upon these two programs working in tandem!

To revert to Google as your preferred search engine, please do the following.
* In the location bar, type '''about:config''' and hit Enter.
* In the filter at the top, type: '''keyword.URL'''
* Double click it and remove whatever's in there and replace it with http://www.google.com/search?q=
The URL to add in "keyword.URL" becomes a link in this post, so right click it and choose "Copy Link Location" to copy it to the Windows clipboard. Then hit CTRL+V to paste it. Saves you having to type the whole thing.
'''To reset your home page, do the following'''.
* Go to the site you want to set as your homepage.
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Firefox 5 will not install

I had to do a restore point on my lap top. I had downloaded version 5 just before the restore. When my computer came back on, I could not run Firefox, so I tried to uninstall and then reinstall. I got the message "language library not found" . All the files are still on my computer, but Firefox still will not run nor can I uninstall it.

Use Internet Explorer and download another copy of version 5.0 and save it to another download location. Try installing the fresh copy.

I uninstalled Firefox once, reinstalled it and it ran. I had a problem so I did it again. Now it will not run and I get an error message saying that firefox is running and you can only run one at a time. I can't figure out what is running.

Because of a problem, I uninstalled Firefox once, reinstalled it and it ran. I had a problem so I uninstalled/reinstalled it again. Now it will not run. I get an error message saying that firefox is running and you can only run one at a time. I have uninstalled multiple times and can't figure out what is running. The is only one Firefox installed and it is not open. What does this mean and how do I fix it?

If you use ZoneAlarm Extreme Security then try to disable Virtualization.
*http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
See also:
*[[/questions/880050]]

Firefox will not run after System restore or running in compatibility mode for windows 98. How do I fix this? I already tried all other solutions on this site.

I was running Firefox fine just yesterday. I screwed up the registry a litle while removing an installed program completely, so I restored the system and everything appeared to work fine. I then decided to play an old video game, Return to Krondor, which was made back in 1998, so I ran the program with no other programs running in compatibility for windows 98. After finishing the game, I closed it and put the computer in hibernation mode. I come back today and firefox will not run at all. It is not running in the background and there are no programs running. There are no services running which could interfere with it. I think somehow Firefox may think I'm in compatibility mode still, but I have no idea.
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The person that I was assisting, has Windows 7 which has 64 bit system. Her browser was IE 10.
Was IE11 ever offered (or installed) via Windows Update?
Is her computer currently fully-patched at Windows Update?
Is Adobe Shockwave Player v12.1 (or higher) installed on her computer?
Is Adobe Flash Player v15.0.0.189 (or higher) installed on her computer?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Troubleshoot Shockwave Player installation for Windows
http://kb2.adobe.com/cps/403/kb403264.html
You will find support for Shockwave Player in this forum:
http://forums.adobe.com/community/webplayers/webplayers_shockwave
~Robear Dyer (PA Bear) MS MVP-Windows Client since 2002 Disclaimer: MS MVPs neither represent nor work for Microsoft

Firefox 4.0 will not find update to 4.0.1, add-ons for 4.0.1 will not run

30 May 2011, 18:22h UTC
Downloaded 4.0 UK-edition on my laptop, the 4.0 US-edition on my desktop, and the 4.0 UK-edition on a 2nd laptop.
On mine, updates to 4.0.1 are not found, some add-ons were taken off, as incompatible, that ran on the 4.0 on my desktop (and weren't on the 2nd laptop). Add-ons, now already even compatible with 4.0.1 (running on the 2nd laptop) will not run as 'incompatible' with 4.0 (though listed on the add-ons site as compatible.
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Didn't crash, though it 'likes' doing that after printing (always Badly! with dreadful printing options/previews), leaving two tabs (rather than the one before), both of which only can be shut from their context menus. Crash reports have been sent with same email address, but not been answered. This browser has all the qualities of a Beta-release and needs some serious overhauls (it's also not very new or much safer!).
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I've since updated manually to 4.0.1, but haven't yet tried the full uninstall version, because I have to export plenty of settings first (and/or manually copy them). Also means I'd have to start from scratch with many customizations in No Script.
That said, I'll try the 'Safe Mode' option tonight, thank you :-)!
If I have to uninstall the whole shebang, I'd be more tempted to go back to 3.6.x until a few more of 4's teething problems (e.g. the messy print dialogues, particularly preview, which regularly doesn't even work) have been tackled.
Thanks-1M! for now - keep you posted.

It will not run on Mac OSX 10.5.8, on a G% dual 2.0ghz, now my older version of Firefox is gone...

I downloaded Firefox 4.0 and It will not run on Mac OSX 10.5.8, on a Mac G5 dual 2.0ghz. Now my older version of Firefox is gone...Why won't it work, the download page says it is for OSX and does not say it will not work on any particular OSX. Can your clarify. And can I get the old Firefox 3 back or should I continue using Safari....?

Yes I've read every one of them, none of them provide solutions whatsoever, I have spent about ten hours on this site in the past two days to no avail, none of the "resolved" threads provided any sort of solution for me, I have tried everything suggested on this website so far, multiple times, to no avail.

Installed firefox 4 but will not run on osx10.4.how do i retrieve version 3.6 and all bookmarks etc

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You can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html
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After computer would not boot and could not be repaired, I reformatted the HDD, reinstalled Vista plus all service packs and updates, recovered files from Microsoft backup and installed new copy of Firefox 3.6. Firefox will not run.
I have deleted all old M0zilla profile folders and reinstalled Firefox again to no avail.
After intallation was completed, the automatic startup just placed a small box on the screen "Import wiz". This just sat there with no activity. After I closed this box, none of the Firefox start buttons would open the program -- just the blue rotating icon for about 2 seconds then nothing.

Hi,
Please try to rebuil the WMI repository.
For detailed information, please refer to the blog below,
http://blogs.technet.com/b/askperf/archive/2009/04/13/wmi-rebuilding-the-wmi-repository.aspx
If issue persists, due to sfc doesn't work, could you try to repair your system with the installation disk?
Best Regards.
Steven Lee
TechNet Community Support

How do I import multi-level bookmarks from IE 8 to FireFox 17 if IE 8 is broken, cannot re-install it, and will not run?

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If you have problems with importing the IE Favorites in Firefox then export the favorites in IE to an HTML file and import that file in the Firefox Bookmarks Manager.
If you do not have the menu bar in IE then right-click the toolbar at the top to enable the Menu Bar.
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* Import the HTML file in Firefox:<br>Bookmarks > Show All Bookmarks > Import & Backup > Import Bookmarks from HTML: From File
See "Import from another browser" and "Import from file":
* http://kb.mozillazine.org/Import_bookmarks

Firefox 4 overwrote previous version, will not run on my system. HTF do I revert to previous version?

Firefox 4 overwrote previous version in Applications folder, now will not run on my system. HTF do I revert to previous version?

Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox
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Using Vista operating system Firefox Version 3.05 tried to update to new version but after download it goes to run then my only option is save the file it will not run the file.

the firefox set 7.01 up file can be downloaded but will not run do I have to update to 4 the 5 up to 7?
download run setup
unable too run setup everytime

The longer this thread continues, the more ancillary comments you throw in that aren't directly pertinent to your problem with your DVR software not working with Firefox 4.0. Sorry, I don't intend to continue with this discussion.
I do agree that ''something'' needs to be done better with regards to plugins for Firefox, but I do disagree with you as to whose responsibility that ''something'' is.

Firefox automatically updated to a version that will not run on my version of OSX... can I reinstall my old version and keep my saved bookmarks, etc?

I am running OSX 10.4.11 on my iMac; Firefox automatically updated to version 12, and now it will not run on my computer.
Is there a way to deinstall the new version while keeping my saved bookmarks, etc?
If not, how do I deinstall 12 and reinstall the older version of Firefox that worked with my operating system?
Thanks.

[[Firefox no longer works with Mac OS X 10.4 or PowerPC processors]].
You can install Firefox 3.6 from [http://www.mozilla.org/en-US/firefox/all-older.html http://www.mozilla.org/en-US/firefox/all-older.html]. Please keep in mind that not only is Firefox not receiving any updates (thus rendering it insecure), neither is Mac 10.4 or any of the plugins used on it. Running such an old Operating System is dangerous to your information's security on the internet. something for you to keep in mind.

No matter what I do, I cannot get Firefox to run Java correctly. I've deleted the cache, etc., etc., but my school programs will not run on Firefox.

Firefox (v. 18.0.1) will not run my school programs any more since the Java scare. It also is choking at running screencast-o-matic.
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Been there done that. Actually I have even install a fresh Firefox on virgin win8 64-bit laptop (without synchronising to my firefox in general) with the absolutely latest Java - didn't help either. And my test page is not the only one, but as I did this myself I know exactly the contents.
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Firefox 4. will not run on my pc

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