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]]  
* [[Application fails to start because js3250.dll was not found| Firefox fails to start because js3250.dll or other files are deleted]]  (malware issue)
* [[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]]
* [[Problems printing web pages]] (more [http://forums.mozillazine.org/viewtopic.php?t=450885  here])
* [[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===
* [[Firewalls |Internet access is blocked by your firewall]] after updating Firefox  
* [[Firewalls |Internet access is blocked by your firewall]] after updating Firefox  
* [[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
* [[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
* Other [[Software Update]] problems, including ""Software Update Failed" and "AUS: Update XML File Malformed (200)" messages
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* 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]]  
* [[Scrolling with arrow keys no longer works]]
* [[Scrolling with arrow keys no longer works]]
* [[Find bar opens when typing in textbox]]  
* [[Find bar opens when typing in textbox]]  
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* [[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===
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*"Do this automatically" grayed-out or not remembered and other issues with [[file types and download actions]]
*"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?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]]


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* "[[SSL is disabled]]" message
* "[[SSL is disabled]]" message
* "[[Could not initialize the browser security component|Could not initialize the browser's security component]]" 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]]
* [[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?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]]   
* [[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]]
* [[Uninstalling breaks file type associations or icons]]
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* [[Use IE messages upon opening Firefox]] (malware issue)   
* [[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)
* [[Addresses entered in IE open in Firefox]]
* [[XPCOM:EventReceiver is not responding message on system shutdown]]
* [[XPCOM:EventReceiver is not responding message on system shutdown]]
* [[Addresses entered in IE open in Firefox]]
* [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