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Firefox will not start

Műveletek
Tartalom testreszabása:

This articles describes what to do if the Firefox window doesn't open when you open choose the Firefox icon.

  • If Firefox starts but won't load any web sites, see Error loading web sites.
  • If you get the error messages that indicate a crash such as "Firefox has encountered a problem and needs to close", "Quality Feedback Agent", or "Mozilla Crash Reporter", see Firefox crashes.

Tartalomjegyzék

Specific error messages

Firefox is already running but is not responding

See Firefox is already running but is not responding for solutions.

Linux:

There was an error launching the application

This error indicates that either Firefox is not installed or your shortcut to it is incorrect. Make sure that Firefox is installed at the location specified by the shortcut. If it isn't, install Firefox if necessary, then modify the shortcut to point to the correct location.

Windows:

The program must close to allow a previous installation attempt to complete. Please restart.

(Windows Vista) If you are receiving the above error message while attempting to start Firefox, try to restart the program. If the problem persists, do the following:

  1. Restart your computer.
  2. Select the Start Menu in the Windows Taskbar.
  3. In the Search box, enter the following:
    %APPDATA%
  4. Press Enter.
  5. From the Application Data folder, navigate to Local\VirtualStore\Program Files\Mozilla Firefox.
  6. Delete the file xpicleanup.dat.
  7. Restart Firefox.

(Windows XP)

  1. Click on the Start button and select Search to open the Search Results window.
  2. On the left side of the Search Results window, click on the All files and folders link.
  3. Click to expand the More advanced options list.
  4. Put a check mark next to Search system folders, Search hidden files and folders, and Search subfolders.
  5. In the All or part of the file name field, type xpicleanup.dat.
  6. Click Search to begin the search.
  7. If any results are returned, delete them.
  8. Restart Firefox.

Windows:

Error opening file for writing...

If you receive the above error when launching Firefox on a Windows system, you may be required by Firefox to log in as an administrator. You can either reboot the computer or, if you have an administrator account, you can execute the program as an administrator.

  1. Find the firefox.exe program file in the Firefox application folder on your system.
  2. Right-click the icon.
    • (Windows XP) Select Run As.... Select The following user:. From the User name drop-down, select Administrator or another user that has administrator privileges. Enter the password required to login to this account. Click OK.
    • (Windows Vista) Select Run As Administrator.... Complete a similar set of steps, as those listed above.
  3. The Firefox application is started using the administrator Windows account. The user that was used to login to Windows at startup is still the active one.

Firefox 3, Mac OS:

Firefox 3 will not start on Mac OS X previous to 10.4

Firefox 3 requires at least Mac OS X 10.4. You must downgrade to Firefox 2 if you have a previous version of OS X. Firefox 2 is available at http://www.mozilla.com/en-US/firefox/all-older.html.

Firefox will not start after installing or updating McAfee SiteAdvisor

Firefox may fail to open after:

  • installing or updating the McAfee SiteAdvisor Firefox extension, or
  • updating McAfee software that includes the SiteAdvisor component

According to MacAfee, the problem is caused by a conflict between SiteAdvisor and automatic proxy configuration scripts in Firefox. To fix this problem, you must start Firefox in Safe mode and uninstall the SiteAdvisor extension.

  1. Close down Firefox completely: At the top of the Firefox window, click the File menu, and select the Exit menu item.Close down Firefox completely: On the menu bar, click the Firefox menu, and select the Quit Firefox menu item.Close down Firefox completely: At the top of the Firefox window, click the File menu, and select the Quit menu item.
  2. In Windows, click Start, open the All Programs list, and navigate to the Mozilla Firefox folder. In the Mozilla Firefox folder, select Mozilla Firefox (Safe Mode).
    Firefox 3, Mac OS:
    Hold down the Option key, as you start Firefox.
    Firefox 2, Mac OS:
    Go to the Utilities directory (in the Applications folder) and open Terminal, then run:
    /Applications/Firefox.app/Contents/MacOS/firefox -safe-mode
    Go to your Terminal and run:
    /path/to/firefox/firefox -safe-mode
  3. Firefox should start up with a Firefox Safe Mode dialog.
    Note: You can also start Firefox in Safe Mode by clicking Start, selecting Run (or use the Start Search box in Windows Vista) and then entering the following in the text field:
    firefox -safe-mode
  4. When Firefox starts in Safe Mode, select the Tools menu at the top of the Firefox window, and select Add-ons. The Add-ons window opens.
  5. In the Add-ons window, select the Extensions panel.
  6. Select the SiteAdvisor extension.
  7. Click Uninstall.
  8. If SiteAdvisor is installed as part of a McAfee software package such as McAfee Internet Security Suite, you can selectively remove just the SiteAdvisor component using the McAfee uninstaller. For more information, see the documentation that came with the MacAfee product.

Firefox will not start after installing add-ons

If Firefox previously worked but stopped after you installed extensions or themes, see Troubleshooting extensions and themes.

Firefox previously worked

If Firefox previously worked but suddenly doesn't start, it may be due to some corrupt data in your settings. Uninstalling and reinstalling Firefox would not fix this problem because your settings are not removed on uninstall.

To test to see if this is the problem, use the Profile Manager to create a new profile. If the problem goes away, you can then move your bookmarks and other important settings into the new profile.

Linux:

Firefox will not start on Linux

If you installed Firefox outside of your package manager, make sure that your system has the libraries listed in the system requirements.

Firefox 3, Windows:

Firefox won't launch if started from another Application

If you have more than one Firefox profile and usually get prompted to pick a profile when starting Firefox, clicking on internet links in other programs will not start Firefox if you are not using the latest version. As a workaround, Check mark the "Don't ask at Startup" option in the Profile Manager and switch Profiles by opening "firefox.exe -ProfileManager". (Fixed in Firefox 3.0.2 and above.)

Solution: Update Firefox to the latest version.




Based on information from Browser will not start up (mozillaZine KB)


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Az oldal utolsó módosítása: Csütörtök 09 sorrendje Október, 2008 19:59:11 PST.
Az oldal szerkesztői:: Bubo , Bo , James , icyerasor , myles7897 , AliceWyman , np , djstsys , skulvis , admin and Chris_Ilias .
- This is a support/troubleshooting article -