Issues with Firefox: Difference between revisions

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This  list of the more frequently-encountered issues or problems with Firefox is organized by subject and may include links to MozillaZine forum topics and other external sources in addition to Knowledge Base articles.  It is not a complete list of Firefox issues.  If you don't find an answer below,  you can browse all articles in the [[:Category:Issues (Firefox)]],  use the Knowledge Base Search function, or look through the official list of known issues found in the [http://www.mozilla.com/firefox/releases/ Firefox release notes].
This  list of the more frequently-encountered issues or problems with Firefox is organized by subject and may include links to MozillaZine forum topics and other external sources in addition to Knowledge Base articles.  It is not a complete list of Firefox issues.  If you don't find an answer below,  you can browse all articles in the [[:Category:Issues (Firefox)]],  use the Knowledge Base Search function, or look through the official list of known issues found in the [http://www.mozilla.org/firefox/releases/ Firefox release notes].
   
   
===General===
===General===
* [[Browser will not start up]]  
* [[Browser will not start up|Firefox will not start up]]  
* [[This application has failed to start because js3250.dll was not found| Firefox fails to start because js3250.dll or other files are not found]] 
* [[Error loading websites]]
* [[Error loading websites]]
* [http://forums.mozillazine.org/viewtopic.php?t=450885  Problems printing web pages]
* [[Problems printing web pages]] (more [http://forums.mozillazine.org/viewtopic.php?t=450885  here])
* [[Profile in use|  Firefox says my profile is in use or that it is "already running but is not responding"]]
* [[Profile in use|  Firefox says my profile is in use or that it is "already running but is not responding"]]
* [[Lost bookmarks |All my bookmarks are gone]] or I [[Bookmarks not saved | can't save new bookmarks]]
* [[Firefox hangs | Firefox hangs, freezes or stops responding]]
* [[Firefox hangs | Firefox hangs, freezes or stops responding]]
* [[Firefox CPU usage]]
* [[Firefox CPU usage]]
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===Installation and updates===
===Installation and updates===
* Problems with [[Firewalls]] after updating Firefox
* [[Firewalls |Internet access is blocked by your firewall]] after updating Firefox  
* [http://forums.mozillazine.org/viewtopic.php?t=480910 Firefox 2 not working after upgrade] including broken tabs or missing bookmarks.
* [[Unable to install themes or extensions - Firefox#Unexpected_installation_error_-203|Add-ons not working or unable to install  themes or extensions  - Unexpected installation error -203]] after an update
* [[Java#Java_console_disabled_-_Firefox | "Java Console is incompatible" message]] after updating Firefox
* Other [[Software Update]] problems, including ""Software Update Failed" and "AUS: Update XML File Malformed (200)" messages
* [[Unable to install themes or extensions - Firefox | Unable to install themes or extensions]]
* [[Unable to install themes or extensions - Firefox | Unable to install themes or extensions]]
* [[Problematic extensions]] (including those that cause conflicts with other extensions or [[:Category:Plugins | plugins]])
* [[Problematic extensions]] (including those that cause conflicts with other extensions or [[:Category:Plugins | plugins]])
* Problems with extensions and themes after [[Updating Firefox | updating Firefox]].
* Problems [[uninstalling extensions]] and [http://forums.mozillazine.org/viewtopic.php?t=410166 removing "*.xpi" or "ghost" entries from the Extensions list]
* Problems [[uninstalling extensions]] and [http://forums.mozillazine.org/viewtopic.php?t=410166 removing "*.xpi" or "ghost" entries from the Extensions list]
* [[Distro does security fix | Your Linux distributor releases a patched Firefox but the Firefox website wants to force you to update]]
* [[Distro does security fix | Your Linux distributor releases a patched Firefox but the Firefox website wants to force you to update]]
===Bookmarks and browsing history===
* [[Lost bookmarks |All my bookmarks are gone]]
* I [[Bookmarks not saved | can't save new bookmarks]]
* [[Unable to export bookmarks to HTML file - Firefox|I can't export bookmarks to an HTML file]]
* When I try to restore a bookmark backup I get the error,  [[Unable to process the backup file - Firefox|Unable to process the backup file]].
* [[Bookmarks history and toolbar buttons not working - Firefox|Bookmarks and browsing history are not working, back/forward toolbar buttons are disabled]]


===User interface===
===User interface===
* [[Clipboard not working | Clipboard (cut/copy/paste) not working]].
* [[Clipboard not working | Clipboard (cut/copy/paste) not working]]  
* [http://forums.mozillazine.org/viewtopic.php?t=383246 Can't scroll through webpages using the keyboard arrow keys] ([[Accessibility.browsewithcaret |caret browsing issue]])
* [[Scrolling with arrow keys no longer works]]
* [[Find bar opens when typing in textbox]]  
* [[Find bar opens when typing in textbox]]  
* [[Window shakes]]
* [[Window shakes]]
* [[Resizing oversize window | Resizing an oversized window]] or setting Firefox to allow [[Resizing popups | resizing of popup windows]]  
* [[Resizing oversize window | Resizing an oversized window]] or setting Firefox to allow [[Resizing popups | resizing of popup windows]]  
* [[Gray bar below status bar | Large gray bar or box below the status bar]]  
* [[Gray bar below status bar | Large gray bar or box below the status bar]]  
* [[Unable to search or add new engines]]
* [[Unable to search or add new engines]]  
* [[Corrupt localstore.rdf |Toolbar customizations reset on startup]] (and other [[localstore.rdf]] issues).
* [[Corrupt localstore.rdf |Toolbar changes lost or buttons missing]] including customizations reset on startup,  missing back/forward buttons after Firefox 3 upgrade, and other [[localstore.rdf]] issues.


===Downloading opening or saving files===
===Downloading opening or saving files===
*[[Unable to save or download files]]  
*[[Unable to save or download files]]  
*[[Downloads not visible in Download Manager]]
*[[Downloads not visible in Download Manager]]
*[http://forums.mozillazine.org/viewtopic.php?t=454628 Download error: "The associated helper application does not exist"] when trying to open certain files  
*Download error: [[The associated helper application does not exist]] when trying to open certain files  
*The [[Download Actions list is empty]]   
*The [[Download Actions list is empty]]   
*[[Changing media handling behaviour]] when clicking links to download or open certain types of files
*"Do this automatically" grayed-out or not remembered and other issues with [[file types and download actions]]
*[[Opening files using plugins]]
*[[Opening files using plugins]]
*[http://forums.mozillazine.org/viewtopic.php?t=494539 Firefox does not offer the option to "Do this automatically" or only "Save File" is offered] when opening certain file types.
*[http://forums.mozillazine.org/viewtopic.php?f=38&t=1025605 Opening files from the Downloads window]
* [http://forums.mozillazine.org/viewtopic.php?f=38&t=1329015 "Open File - Security Warning"] on Windows, when launching saved downloads (more [http://blog.case.edu/bes7/2009/06/18/remove_the_security_warning_on_files_downloaded_with_firefox_30_and_35 here]).
* [[:Category:Downloads_-_Firefox |Other Firefox file-opening and download issues]]
* [[:Category:Downloads_-_Firefox |Other Firefox file-opening and download issues]]


===Problems with specific websites or web features===
===Problems with specific websites or web features===
* [[Websites look wrong]]
* [[Websites look wrong]]  
* [[Images or animations don't load]] (or images look wrong)
* [[Images or animations do not load]] (or images look wrong)
* [[Flash#Quicktime_plugin_takes_over_Flash | Quicktime symbol with a question mark replaces Flash content]]  
* [[Flash#Quicktime_plugin_takes_over_Flash | Quicktime symbol with a question mark replaces Flash content]]  
* [[Video or audio doesn't play]]
* [[Video or audio does not play]]
* [[Background music doesn't play]]
* [[Background music does not play]]
* [[Unresponsive Script Error]]
* [[Unresponsive Script Warning]]
* [[Popups not blocked]] (Details [http://forums.mozillazine.org/viewtopic.php?t=240548 here])
* [[Popups not blocked]] (Details [http://forums.mozillazine.org/viewtopic.php?t=240548 here])
* How to disable [http://forums.mozillazine.org/viewtopic.php?t=238166 bookmark this page popup]
* How to disable [http://forums.mozillazine.org/viewtopic.php?t=238166 bookmark this page popup]
* Why "ALT" text [[image tooltips don't work]] in Firefox. (Details [http://forums.mozillazine.org/viewtopic.php?p=1115673 here])
* Why "ALT" text [[image tooltips do not work]] in Firefox. (Details [http://forums.mozillazine.org/viewtopic.php?p=1115673 here])


===Privacy and security===
===Privacy and security===
* [[Websites report cookies are disabled when they're not]]
* [[User name and password not remembered]]
* [[User name and password not remembered]]
* "[[SSL is disabled]]" or "Could not initialize the browser's security component" error message.
* [[Links to local pages don't work]]
* [[Master password | Firefox asks for a nonexistent master password]]
* [[Master password | Firefox asks for a nonexistent master password]]
* [[Websites report cookies are disabled when they're not]]
* "[[SSL is disabled]]" message
* "[[Could not initialize the browser security component|Could not initialize the browser's security component]]" message.
* Other [[Error loading secure sites|errors loading secure sites]]
* [[Links to local pages do not work]]
* [http://www.mozilla.org/projects/netlib/PortBanning.html "Access to the port number given has been disabled for security reasons."]
* [http://www.mozilla.org/projects/netlib/PortBanning.html "Access to the port number given has been disabled for security reasons."]
 
===Other===
===Other===
* [http://forums.mozillazine.org/viewtopic.php?t=379394  File associations or filetype icons are wrong] after [[uninstalling Firefox]]
* [http://forums.mozillazine.org/viewtopic.php?f=38&t=934345 Jar:File not found error] ("Firefox can't find the file at jar:file:///C:/Program Files/Mozilla Firefox/chrome/en-US.jar!...")
* [[Windows error opening Internet shortcut or local HTML file - Firefox |"Windows cannot find ..." error message (or extra tab/window) when opening Internet shortcut or local HTML file]]
* [[Uninstalling breaks file type associations or icons]]
*"Failed to save the preferences file" error or [[Preferences not saved |changes to preferences not saved]]
*"Failed to save the preferences file" error or [[Preferences not saved |changes to preferences not saved]]
* Determining whether Firefox problems are caused by [[issues related to plugins]]
* Determining whether Firefox problems are caused by [[issues related to plugins]]
* [[Use IE messages upon opening Firefox]] (malware issue) 
* [[Firefox.exe always open]] in the Windows Task Manager and automatically loads on Windows boot up (malware issue)
* [[Firefox.exe always open]] in the Windows Task Manager and automatically loads on Windows boot up (malware issue)
* [http://forums.mozillazine.org/viewtopic.php?t=219125 “XP Com: Event Receiver” Windows shutdown error] caused by non-responding firefox process ([https://bugzilla.mozilla.org/show_bug.cgi?id=309150 bug 309150])
* [[Addresses entered in IE open in Firefox]]
* [[XPCOM:EventReceiver is not responding message on system shutdown]]
* [http://forums.mozillazine.org/viewtopic.php?t=656192 Deleting Firefox profile via Profile Manager removes non-Mozilla files]


==See also==
==See also==

Latest revision as of 03:21, 30 December 2011

This list of the more frequently-encountered issues or problems with Firefox is organized by subject and may include links to MozillaZine forum topics and other external sources in addition to Knowledge Base articles. It is not a complete list of Firefox issues. If you don't find an answer below, you can browse all articles in the Category:Issues (Firefox), use the Knowledge Base Search function, or look through the official list of known issues found in the Firefox release notes.

General

Installation and updates

Bookmarks and browsing history

User interface

Downloading opening or saving files

Problems with specific websites or web features

Privacy and security

Other

See also

Firefox FAQs