Firefox cannot update

Firefox doesn't auto-update. It has stopped on version 14.0.1. When updating via "help -> about firefox" it tries to connect to the server but cannot. When trying to download the latest full version the download gets cancelled. After double-clicking on the file "Firefox Setup 16.0.2.exe" ( the cancelled one) it starts downloading but after it completes the download, the exe file disappeares from the "downloads" folder!! Tried disactivating all add-ons but no change.
I'm using 7,avast pro, comodo firewall and malwarebytes

If there are problems with updating then best is to download the full version of the Firefox installer.
*C:\Program Files\Mozilla Firefox\
*http://kb.mozillazine.org/Installation_directory
Download a fresh Firefox copy and save the file to the desktop.
*Firefox 16.0.x: http://www.mozilla.org/en-US/firefox/all.html
Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.
*Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you will also lose your personal data like bookmarks and passwords from profiles of other Firefox versions.
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.
*http://kb.mozillazine.org/Uninstalling_Firefox
Your bookmarks and other profile data are stored in the Firefox Profile Folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

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I cannot update my firefox. I am running on MAC OS X 10.6.8.

I cannot update my firefox. I am running on MAC OS X 10.6.8. I will begin the update process but it will never complete it - often crashes before it finishes the process. Any recommendations?

If there are problems with updating or with the permissions then easiest is to download the full version and trash the currently installed version to do a clean install of the new version.
Download a new copy of the Firefox program and save the disk image (dmg) file to the desktop
*Firefox 17.0.1: http://www.mozilla.org/en-US/firefox/all.html
*Trash the current Firefox application (e.g. open the Applications folder in the Finder and drag the Firefox application to the Trash) to do a clean (re-)install
*Install the new version that you have downloaded
*https://support.mozilla.org/kb/Installing+Firefox+on+Mac
Your profile data is stored elsewhere in the Firefox Profile Folder, so you won't lose your bookmarks and other personal data if you uninstall and (re)install Firefox.
*http://kb.mozillazine.org/Profile_folder_-_Firefox

Upon updating to firefox 6, I get the error message "cannot update because 'libsmime3.dylib' is in use" Now firefox cannot start because it is partially updated and non-functional.

Firefox fails to open, now that it has been partially updated. Initially, it asked to replace the old firefox, which then proceeded to the next step when this appears: "cannot update because 'libsmime3.dylib' is in use". I have quit all applications and restarted, trying to run the install again as the first thing when the computer comes up. Mac version is OS X 10.5.8.

Firefox is already running but is not responding
* https://support.mozilla.com/en-US/kb/Firefox%20is%20already%20running%20but%20is%20not%20responding
Profile in use
* http://kb.mozillazine.org/Profile_in_use
The program must close to allow a previous installation attempt to complete
* https://support.mozilla.com/en-US/kb/The%20program%20must%20close%20to%20allow%20a%20previous%20installation%20attempt%20to%20complete
Check and tell if its working.

I cannot update Firefox, my computer is claiming that I need admin permission (everything else updates fine) I am the admin for this computer and I have the password. Any ideas?

I cannot update Firefox, I've tried disabling firewalls etc. My computer claims that I need admin permission to update Firefox although I am the owner and administrator of this computer. There are updates available and know the admin password for this computer. It started when I installed the Noscript tool (which I have tried disabling with the same results)
== This happened ==
A few times a week
== I installed the Noscript tool

1. Download either the zipped form (or the portable form) of the latest version of FireFox.
2. Unzip (or execute the portable version) into a scratch directory. (If using the portable version, find the scratch subdirectory with the same contents as the firefox directory in the "program files" - probably called "firefox". You may have to look for it - it's buried)
3. Erase the contents of the firefox subdirectory in the Program Files directory,
4. and copy into "Program Files/firefox" directory the unzipped files (or the files in the portable subdirectory labelled "firefox" - the one that has the set of files and directories just like the ones you erased.).
It worked for me.

My Firefox 3.6.23 tells me that there are no updates. I cannot update to Firefox 7!

I tried to update my firefox to latest version. It downloaded 3.6.23 update. I applied it, restarted Firefox, clicked Help -> Check for Updates - and it said there were no updates. I tried restarting Forefox many times, it didn't help. I cannot update to Firefox 7!

Version 7 is not (yet) being offered via the search for updates feature. You can download the installer from http://www.mozilla.org/en-US/firefox/new/

Firefox says it cannot update securely. Then says it is up-to-date.

Every other time I restart or turn on my laptop, Ill randomly get a pop-up window that says: 'Something is preventing Firefox from updating securely. Please make sure you have the latest version'. Then, I check, and it is in fact up-to-date. It's not really a BAD thing... just annoying.

Hello timeslip325, see: [https://support.mozilla.org/en-US/kb/firefox-says-its-just-updated-every-time-it-starts?redirectlocale=en-US&redirectslug=Firefox+has+just+updated+tab+shows+each+time+you+start+Firefox#os=win7&browser=fx21 Firefox says it's just updated every time it starts - how to fix]
If firefox don't keep the changes after restart it, see : http://kb.mozillazine.org/Preferences_not_saved
thank you

Error: "FT DeepDark 11.3.1 could not be installed because Firefox cannot modify the needed file." What does this mean?

In an earlier version (Firefox v.31) on this, and (presently) on two other PC's, I was/am able to run add-on FT DeepDark 11.3.1 without any problems. It was only recently - after updating to v.32.0.3 on this PC that this situation started. The PC in question is a Dell Dimension 8400 Intel P4 running Windows 7, though I'm thinking it may have something to do with the newer version of Firefox. Could anyone help me with this? I like this add-on because it is easier in my eyes when browsing the internet. Thanks
PS: Attempted to install the troubleshooter, and again I received a similar error: "Troubleshooter could not be installed because Firefox cannot modify the needed file."

This error has been reported before in this bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=730040#c21
Please read that bug I linked you to and let me know if the last comment in the bug solves your problem. Apparently the problem is about the addon .xpi file being read-only. Try right-clicking it, going to Properties and unchecking the "Read-only" attribute box at the bottom of the dialog. Click Apply, then OK.

I now get an 500 Internal Server error when loading Firefox, after updating RealPlayer

I now get an 500 Internal Server error when loading Firefox, after updating RealPlayer.
When I try to open Firefox, it opens. But there is the error message.
What is this? How do I did rid of it?
'''bold text'''

Clear the cache and the cookies from sites that cause problems.
* "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
* "Remove the Cookies" from sites causing problems: Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Appearance/Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]
You can also check the connection settings in Tools > Options > Advanced : Network : Connection<br />
If you do not need to use a proxy to connect to internet then select "No Proxy"
See "Firefox connection settings":
* [[Firefox cannot load websites but other programs can]]

Firefox cannot load websites but other programs can

Firefox cannot load any webpages, but IE can.
I have tried everything suggested. This problem happened befoer I updated Firefox and did not resolve after I updated firefox.
I tried changing internet settings, disabling firewall, and even disabling IVP6, but nothing is working.

Have you already seen [[firefox cannot load websites but other programs can]]
*What exactly happens, or does not happen and do you get any error messages ?
*Is it all websites you have a problem with, or only some ?
* What happens if you work offline, can you load web pages that are saved on your own computer ? <br> (save something with IE, -as HTML web page files - maybe this page, then try opening it with both Firefox and IE)
Can you use firefox to look at your local disk such as (depending on your setup) ''file:///C:/''
Try checking security settings, and security logs, is firefox being blocked ?

Firefox cannot load websites, but IE can, even after I tried all the ideas in the current articles on this topic as of March 10, 2011!

Firefox cannot load ANY websites, but IE can, even after I tried all the ideas in the current articles on this topic as of March 10, 2011!
One day it was fine, and the next day it stopped working! I have tried everything suggested under the topic "Firefox cannot load websites but other programs can."

You should e able to install FlashPlayer separately on IE and Firefox. So you may use Flash 11.3 on IE and 11.2 or 10.3 on Firefox.
Work from the administrator account. First of all sort out Firefox, use the Adobe uninstaller to uninstall Flash before reinstalling 11.2 Afterwards check that IE is ok, the Uninstaller may have changed that so you may need to reinstall Flash on IE.
* see instructions in [[flash 11.3 crashes]]
You are apparently using an outdated Firefox 8. That is not secure you should update to the latest Release Firefox 13 (or within a day or so Firefox 14)
You may also encounter problems relating to use of RealPlayer software and that software may affect use of FlashPlayer 11.3
* see also [[Fix problems with RealPlayer add-ons]]
* a user ''blacksabath710'' recently posted a workaround in [/questions/931055] suggesting use of free software from http://www.dvdvideosoft.com/
P.S.
When you finish set Firefox's FlashPlayer not to upgrade, and until this issue is resolved do not follow suggestions from Adobe, or Plugincheck etc. to upgrade Flash.
Use this test page form Adobe in each browser and account to check Flash is working ok
* http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html
The test page will display version information and error messages or a Flash animation to prove flash is working.

All website went "Not Found HTTP Error 404. The requested resource is not found." and the "Firefox cannot load websites but other programs can" page is not help

''dupe of https://support.mozilla.org/en-US/questions/928117''
all website went "Not Found HTTP Error 404. The requested resource is not found." and the "Firefox cannot load websites but other programs can" page is not helping in any ways

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.
See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
*http://kb.mozillazine.org/Error_loading_websites
You can try to reset (power off/on) the router.

After an firefox auto-update, there is a circle with slash over the icon (do not) and it will not launch.

Firefox was doing one of its automatic updates and it never finished but a circle with a slash through it appeared on the icon and now Firefox won't launch. It gives the following error message:
"The application "Firefox" cannot be launched. -10661"
I've tried re-downloading Firefox but when I get to the window where you move the Firefox icon to the folder it still shows that it has the circle with slash through it. It will start downloading then stop.

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
If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html
Mozilla are working to prevent Mac users with non-compatible systems from getting the notification about Firefox 4, and also not displaying the "Download Firefox 4" button on http://www.mozilla.com

Openoffice plugin fails in firefox after update

After an update firefox cannot open openoffice.org files anymore.
/tmp/mydoc.docx could not be opened, because the associated helper application does not exist. Change the association in your preferences.
Can the openoffice plugin be configured (reinstalling openoffice does not work)

it's known. the plugin hasn't worked before (it opened the file externally but should do this embedded). i'll have a look at it in future versions.

June 10 2012 Firefox automatically updated itself (no choice) on my Intel Mac/Tiger 10.4.11. Can no longer use Firefox, so how do I get back the old one?

June 10 2012 Firefox automatically updated itself (no choice) on my Intel Mac/Tiger 10.4.11. I can no longer use Firefox. I have an old version of Firefox on my Mac G4, but am scared to use that machine in case that Firefox also automatically updates itself. How can I transfer a copy of that older version of Firefox (from the G4) to the Intel Mac, and how do I stop both versions from then automatically updating? How do I then remove the updated version of Firefox from the Intel Mac, which I cannot use? Thank you for your help.

esqki FF update to 13 and now you can't open ? sorry about that.
1. Download (with your safari) a copy of the latest (3.6.28) from your 10.4.11 mac
from
ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.28/mac/
2. '''Trash''' the current Firefox application to do a clean install.
3. Install the version that you have downloaded (3.6.28).
Do not select to remove your personal data, your profile data is stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder], so you won't lose your bookmarks or other personal data.
see also: [https://support.mozilla.org/en-US/kb/install-firefox-mac?redirectlocale=en-US&redirectslug=Installing+Firefox+on+Mac Installing Firefox on Mac]
after install the 3.6.28 version go to: Options > Advanced > Update tab > Firefox updates, check mark '''Never check for updates (not recommended: security risk)''', click Ok to save it, exit firefox and restart it.
https://support.mozilla.org/en-US/kb/settings-network-updates-and-encryption#w_update-tab
thank you

No matter what I do, I cannot update from 3.?.? to 8.?.? I've tried everything suggested but it will NOT update now I cannot open many new websites

Cannot update Firefox from 3.6.3 to 8.0
I've tried repeatedly to do this but it will not load up.
Now I cannot open new websites.

What happens when you download and run the installer? (http://www.mozilla.org/en-US/firefox/new/)
Are you really running 3.6.3? You should update to 3.6.24 ASAP - http://www.mozilla.org/en-US/firefox/all-older.html
Your user agent string may just be set incorrectly. See below
* Type about:config in the URL bar and hit Enter
* If you see the warning, you can confirm that you want to access that page.
* Filter = general.useragent.
* Right-click the preferences that are bold, one line at a time, and select Reset.
* Then restart Firefox

Firefox cannot update

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