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Firefox crashes when loading certain pages

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This article covers the situation where Firefox displays a message about crashing when you visit pages but may behave normally on other pages. This article may also apply if you find that Firefox is crashing when browsing the internet but no one site consistently causes Firefox to crash.

The crash message may look like one of the following:

Windows:
  • Firefox has encountered a problem and needs to close
3:
  • Mozilla Crash Reporter

A number of reasons may be responsible for crashing on certain pages. This article lists a number of possible causes from specific to general.

Sisällysluettelo

Specific cases

This section lists specific issues that are known to cause Firefox to crash.

Windows:

Crashes on sites with Windows Media Player video or audio

The VLC Media Player Plugin may conflict with the Windows Media Player plugin when playing WMP files. You will need to disable or remove the VLC Media Player Plugin to prevent this.

    1. At the top of the Firefox windowOn the menu bar, click the Tools menu and select Add-ons. The Add-ons window will open.
    2. In the Add-ons window, select the Plugins panel if it is not already selected. The set of installed plugins is displayed.
    3. Select VLC Media Player to display the Disable button. Click the button to disable to VLC Media Player plugin.

Crashes when trying to load pages with PDFs

See Crashes when loading PDFs.

Windows:

nsBrowserOpt.dll is malware that installs itself in the Firefox components folder and can cause Firefox to crash when clicking on certain links. If your antivirus or spyware removal software is unable to remove it, follow the below steps to remove it manually:

  1. Close Firefox by opening the File menu and choosing Exit.
  2. Open My Computer or Windows Explorer.
  3. Browse to the folder: C:\Program Files\Mozilla Firefox\components
  4. Delete the file nsBrowserOpt.dll.

3, Windows:

Crash on specific websites

Yahoo! Mail

See Firefox crashes when using Yahoo Mail

Gmail

The Customize Google extension may cause crashes when loading the Gmail inbox. See Problematic or out of date extensions or themes below.

3, Windows:

Kaspersky Antivirus 2009 or Kaspersky Internet Security 2009

New features introduced in Kaspersky Internet Security and AntiVirus can cause Firefox to crash unexpectedly. These have been fixed by Kaspersky in a recent update. Update your Kaspersky product.

Windows:

ZoneAlarm ForceField

ZoneAlarm ForceField may cause Firefox to crash on certain websites. Try clearing the ForceField virtual cache and reboot the computer to see if that resolves the issue. If you need more help, visit ZoneAlarm Support.

General cases

Not using the latest version of Firefox

Firefox updates are regularly released and a number of the fixes are crash related. One of the first, and easiest, things to check is to make sure you're using the latest release. See Firefoxin päivittäminen for details.

Problematic or out of date plugins

Plugins are programs that let Firefox display video and sound and do other things. If you find that certain, specific pages cause Firefox to crash every time you visit them, they may need a common plugin. Follow the steps at the Troubleshooting plugins article to determine whether a plugin is causing your problem.

The following plugins may cause crashes in some instances:

Windows:
  • ActiveX: Firefox does not provide ActiveX support and if you have an old ActiveX plugin installed, you may experience problems such as crashes as well as be subject to a significant security risk. See ActiveX for more information.

  • Silverlight: Specific versions of Microsoft's Silverlight plugin can cause crashes on certain pages. You can disable this plugin in the Plugins tab of the Add-ons Manager to see if this addresses your issue.

See the Troubleshooting plugins article for specific instructions on how to disable or remove plugins and how to figure out which plugins may be causing your crash.

Problematic or out of date extensions or themes

Extensions and themes can often cause crashes and other errors. This is especially true if you recently installed or updated an extension. Follow the steps in the Troubleshooting extensions and themes article to determine whether an extension or theme is causing your problem. The following is a list of extensions known to cause Firefox crashes when triggered by certain pages or seemingly randomly; it should not be considered comprehensive:

  • XPL LinkScanner
  • RealPlayer Browser Record Plugin (installed with RealPlayer)
  • ThinkVantage Password Manager (see the Thinkpad forums)
  • AVG SafeSearch (see Firefox crashes due to old versions of AVG SafeSearch?)
3:
  • Customize Google (Can cause Firefox to crash when loading Gmail)
  • Free Download Manager (Causes Firefox to crash on right-click)

See Uninstalling add-ons for help uninstalling or disabling these extensions.

Windows:

Malware: viruses or spyware

A number of different viruses and spyware are known to crash Firefox. Ensure that your system is kept clean of spyware and viruses. For more information, see Is my Firefox problem a result of malware.

Other possible solutions

See the article on general crash troubleshooting for other possible causes and for instructions for how to get more information about your crash to use when you ask for help.


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Sivua viimeksi muutettu Torstai 03 Syyskuu, 2009 22:14:00 PST.
Tämän sivun avustajat: Jesse_Ruderman , Bo , AliceWyman , underpass , Chris_Ilias ja Cww .
- This is a support/troubleshooting article -