Как автоматически перезапустить mozilla firefox после рестарта ос

Turn off hardware acceleration

With some graphics card and graphics driver setups, Firefox may hang when using hardware acceleration. You can try turning off hardware acceleration to see if it fixes the problem.

  1. Click the menu button and select Options.Preferences.

  2. Select the Advanced panel and the General tab.
  3. Uncheck Use hardware acceleration when available.
  4. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  5. Start Firefox the way you normally do.
  1. Click the menu button and select Options.Preferences.

  2. Select the General panel.
  3. Under Performance, uncheck Use recommended performance settings.Additional settings will be displayed.
  4. Uncheck Use hardware acceleration when available.
  5. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  6. Start Firefox the way you normally do.

If the problem is no longer happening, then hardware acceleration was likely the cause. You can try updating your graphics drivers to see if that fixes it or simply run without hardware acceleration.

Locked preferences file

Firefox may be unable to save your settings if the prefs.js file (or the prefs.js.moztmp file, if it exists) is write-protected or there are other prefs backup files.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Locate the prefs.js file (and, if present, the prefs.js.moztmp file).
  4. Right click on each file in turn and select Properties from the context menu. Check that under Attributes, there is no check in the box next to Read Only

    If RealPlayer is open, that may be locking the prefs.js file. Closing RealPlayer should unlock it.

    for either file.

  5. Delete any prefs-n.js files where n is a number (e.g. prefs-2.js).
  6. Delete Invalidprefs.js if it exists.
  7. Restart Firefox. You should now be able to save preferences.
  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Locate the prefs.js file (and, if present, the prefs.js.moztmp file).
  4. For each file, make sure that your user has write permissions to the file.
  5. Delete any prefs-n.js files where n is a number (e.g. prefs-2.js).
  6. Delete Invalidprefs.js if it exists.
  7. Restart Firefox. You should now be able to save preferences.
  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Locate the prefs.js file (and, if present, the prefs.js.moztmp file).
  4. For each file, hold down the Ctrl key as you click on the file then select Get Info.
  5. Make sure that the Locked option is unchecked.
  6. Delete any prefs-n.js files where n is a number (e.g. prefs-2.js).
  7. Delete Invalidprefs.js if it exists.
  8. Restart Firefox. You should now be able to save preferences.

Firefox program file locks or prevents changes to certain settings

Your installation of Firefox may have been customized to add a program configuration file that locks certain settings or prevents certain changes from being saved. Follow the Reinstall Firefox step in the Troubleshoot and diagnose Firefox problems article to remove the Firefox program from your computer and then reinstall a new copy of Firefox. (Reinstalling Firefox this way will not remove your user data and settings, since those are saved in a separate location from the program files.)

Unable to save any preferences or settings

If none of your settings will save, if you get the Firefox Updated tab every time you start Firefox, or if you have tried the steps above with no effect, the file which Firefox uses to save your preferences may be locked or corrupted.

Firefox program file locks or prevents changes to certain settings

Your installation of Firefox may have been customized to add a program configuration file that locks certain settings or prevents certain changes from being saved. Follow the Reinstall Firefox step in the Troubleshoot and diagnose Firefox problems article to remove the Firefox program from your computer and then reinstall a new copy of Firefox. (Reinstalling Firefox this way will not remove your user data and settings, since those are saved in a separate location from the program files.)

Unable to save any preferences or settings

If none of your settings will save, if you get the Firefox Updated tab every time you start Firefox, or if you have tried the steps above with no effect, the file which Firefox uses to save your preferences may be locked or corrupted.

Troubleshoot your extensions

A problematic extension can cause the problem, which can be resolved by disabling or uninstalling the extension. For information on diagnosing and fixing problems caused by faulty extensions, see the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article.

Troubleshoot your Internet security software

Interactions between certain Internet security software (firewall, anti-virus software) is reported to cause hangs on some systems. You can try to configure your firewall to see if it helps the hang go away.

Firefox hangs when Windows resumes from hibernation on Thinkpad

When resuming Windows from hibernation and Firefox hangs for several minutes it might be due to an issue of the pre-installed «ThinkVantage Technologies Power Manager 6». One option to solve this is to uninstall the software. Another option is to check for a later version of the software on the Lenovo support website and see if that fixes the problem. See Bug 1106202 for more details.

Firefox program file locks or prevents changes to certain settings

Your installation of Firefox may have been customized to add a program configuration file that locks certain settings or prevents certain changes from being saved. Follow the Reinstall Firefox step in the Troubleshoot and diagnose Firefox problems article to remove the Firefox program from your computer and then reinstall a new copy of Firefox. (Reinstalling Firefox this way will not remove your user data and settings, since those are saved in a separate location from the program files.)

Unable to save any preferences or settings

If none of your settings will save, if you get the Firefox Updated tab every time you start Firefox, or if you have tried the steps above with no effect, the file which Firefox uses to save your preferences may be locked or corrupted.

Third-party programs changing Firefox settings

Some programs force Firefox to use certain settings. Below is a list of programs known to do this and actions you can take to make them stop forcing Firefox settings:

  • Creative ZenCast changes Firefox’s user agent, interfering with Java.
  • McAfee Privacy Service turns Firefox’s pop-up blocker off.
  • Norton 360 includes a «Firefox Privacy Cleanup» feature that, if enabled, overrides your Firefox Privacy settings and prevents you from keeping your Browsing History, Cookies or other private data between sessions.

Some third-party toolbars and add-ons change Firefox’s home page and search settings. You can quickly reset these with the SearchReset add-onTo reset these, see Change your default search settings in Firefox and How to set the home page.

See Remove a toolbar that has taken over your Firefox search or home page for more information.

Change the PAC implementation

If you’re using a proxy auto-config file (PAC), Firefox may hang when you attempt to load sites that don’t exist or that you haven’t opened recently. To determine if you use an automatic proxy configuration file:

  1. Click the menu button and select Options.Preferences.

  2. In the General panel, go down to the Network ProxyNetwork Settings section.
  3. Click Settings…. The Connection Settings dialog appears.
  4. If Automatic proxy configuration URL is selected, you are using an automatic proxy configuration file. Do not disable this setting, which will prevent you from accessing the Internet. Instead, provide to your network administrator.
  5. Click Cancel.

Corrupt preferences file

The preferences file may be corrupt, preventing Firefox from writing to it. If you delete this file, Firefox will automatically create another one when it needs to. Here’s how to delete the prefs.js file.

This will remove all your custom settings and settings for many extensions.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Locate the prefs.js file (and, if present, the prefs.js.moztmp file).
  4. Delete those files and any prefs-n.js files where n is a number (e.g. prefs-2.js).
  5. Delete Invalidprefs.js if it exists.
  6. Restart Firefox. You should now have all your preferences reset.

Corrupt preferences file

The preferences file may be corrupt, preventing Firefox from writing to it. If you delete this file, Firefox will automatically create another one when it needs to. Here’s how to delete the prefs.js file.

This will remove all your custom settings and settings for many extensions.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Locate the prefs.js file (and, if present, the prefs.js.moztmp file).
  4. Delete those files and any prefs-n.js files where n is a number (e.g. prefs-2.js).
  5. Delete Invalidprefs.js if it exists.
  6. Restart Firefox. You should now have all your preferences reset.

User.js file overriding Firefox settings

If you don’t have any of the above programs installed, or ifIf you followed the suggestions and certain settings change back each time you start Firefox, you may have to edit Firefox’s configuration files yourself. Don’t panic, it’s pretty easy. Here’s how to do it.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Open the file user.js with a text editor (like NotepadGedit, Leafpad, or KateTextEdit

    If there is no user.js file, these steps won’t help you.

    ).

  4. Remove the lines for the user preferences you want to be able to change. You can delete all the lines if you want to be able to change everything.
  5. Save the file and close the text editor.

You should now be able to change your Firefox settings.

After a crash

Due to unexpected issues such as problems with a website, software errors, or an accidental loss of power, Firefox may unexpectedly close. In these situations, Firefox can restore the pages that you were visiting when it is restarted. Firefox will automatically restore your previous session, the first time you launch it after a crash.

If Firefox crashes a second time, the Restore Session page will appear when you next launch Firefox.

  • To restore your previous session, select the windows or tabs you want to restore and click Restore Session.
  • If Firefox continues to experience errors when windows and tabs are re-opened, you can launch Firefox without restoring these items. To start a new session, click Start New Session.

When you’ve set Firefox to show your windows and tabs from last time

You can set Firefox to always show your windows and tabs from your previous session each time you start Firefox. To change your Firefox startup settings, see , below.

When you’ve set Firefox to restore the previous session at startup

You can set Firefox to always show your windows and tabs from your previous session each time you start Firefox. To change your Firefox startup settings, see , below.

Configuring session restore

By default, when Firefox starts, a single window is opened, displaying your specified home page. If you wish, you can configure Firefox to open all windows and tabs from your previous session:

  1. Click the menu button and select Options.Preferences.

  2. Select the General panel.
  3. Below When Firefox starts select Show your windows and tabs from last time.
  4. Close the about:preferences page. Any changes you’ve made will automatically be saved.

  1. Click the menu button and select Options.Preferences.

  2. Select the General panel.
  3. Below Startup select Restore previous session.
  4. Close the about:preferences page. Any changes you’ve made will automatically be saved.

Privacy issues

Session Restore may keep you logged in to sites that you were logged in to before you closed Firefox. If someone else used your computer after you, they could access your account on these sites. If this is a concern then you should not configure Firefox to open all windows and tabs from your previous session.

You may also wish to disable the Session Restore crash recovery feature which is enabled by default. This will prevent restoring a previous session when Firefox is opened after an unexpected close or software crash:

  1. Type about:config in the address bar and press EnterReturn.A warning page may appear. Click I accept the risk!Accept the Risk and Continue to continue to the about:config page.

  2. In the Search box at the top, type browser.sessionstore.resume_from_crash.
  3. In the resulting grid, double-clickclick the Toggle

    button next to browser.sessionstore.resume_from_crash to set it to false.

Previous session not correctly closed

To get your tabs and windows back from a previous session, you should close Firefox from the menu: Click the Firefox menu

and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

and select Quit.
If you close each window or tab, only the tabs in the final window that you close are available when you restart Firefox.

Settings may be incorrect

For other session restore problems, you may need to make corrections to your Firefox settings:

  1. Click the menu button and select Options.Preferences.

  2. Select the Privacy & Security panel.
  3. In the History section, make sure that the Firefox will drop-down menu is set to either Remember history or Use custom settings for history.
    • If Firefox will is set to Use custom settings for history then make sure that Always use Private Browsing mode is not selected.
    • If Firefox will is set to Use custom settings for history and Clear history when Firefox closes is selected, then click the Settings button and make sure that Browsing & Download History is not selected.
  4. Close the about:preferences page. Any changes you’ve made will automatically be saved.

Create a new places database

If hangs are periodic, it may be caused by a corrupted places database.

Information: The «places» files store the annotations, bookmarks, favorite icons, input history, keywords, and browsing history (a record of visited pages).

To create a new places database, do the following:

Warning: This will clear your browsing history and remove bookmarks of the day.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.
    Wait until Firefox has completely quit.

  3. In the Firefox profile folder, find and rename the files places.sqlite to places.sqlite.old and places.sqlite-journal to places.sqlite-journal.old

    To rename a file, right-click on it and select rename from the menuclick on it once to select it and then click a second time on the file name to make it editable. Then add .old to the end of its name.

    (if it exists).

  4. Finally, reopen Firefox.

Восстановление функционирования Мозилла Файерфокс на компьютере

Существует несколько способов возврата интернет-обозревателя к жизни. Ниже приведены подробные инструкции по восстановлению Firefox.

Вариант 1: через диспетчер задач Windows

Возможно, сбой приложения носит временный характер. Чтобы это проверить, надо выполнить следующие действия:

  1. Открыть «Диспетчер задач
    » Виндовс.
  2. Перейти на вкладку «Процессы
    ».
  3. Найти все записи, содержащие в названии слово «firefox
    ».
  4. Кликнуть по каждой строке правой кнопкой мышки и выбрать в контекстном меню пункт «Завершить процесс
    ».
  5. Перезагрузить вычислительную систему.

Если после данных манипуляций чуда не произошло, и Мазила не заработал, придется прибегнуть к более сложным способам.

  Web Mirrors для Firefox

Вариант 2: использование безопасного режима

Можно загрузить веб-обозреватель в безопасном режиме и попробовать с его помощью исправить ситуацию. Порядок действий таков:

  1. Вызвать командную строку системы сочетанием клавиш Win+R
    .
  2. Набрать строку «C:Program FilesMozilla Firefoxfirefox.exe
    » —safe-mode
    .
  3. Веб-браузер запуститься в особом виде: с деактивированными плагинами и расширениями. Теперь можно, войдя в главное меню обозревателя и открыв список дополнений, отключить те из них, которые, по мнению пользователя, могли вызвать проблемы с запуском Мозиллы.
  4. Запустить Файерфокс в нормальном режиме.

Возможно, и этот метод не принесет желаемого результата. Тогда остается последнее: произвести переустановку интернет-браузера.

  Как обновить браузер Mozilla Firefox

Вариант 3: повторная инсталляция Mozilla Firefox

  1. Найти на жестком диске компьютера файл sqlite
    и папку bookmarkbackups
    . В них содержатся закладки и личные данные из профиля юзера.
  2. Сохранить их в отдельный каталог.
  3. Очистить компьютер от остатков браузера через Удаление.
  4. С помощью стандартной программы-обозревателя Internet Explorer перейти на сайт mozilla.org и заново произвести инсталляцию Мазиллы Фаерфокс.
  5. Скопировать сохраненные ранее пользовательские данные в папку %APPDATA%MozillaFirefoxProfilesDefault
    и перезапустить веб-обозреватель.

Представленный выше информационный материал поможет юзеру самостоятельно восстановить функционирование Mozilla Firefox.

Рекомендуем!InstallPack
Официальный дистрибутив Firefox
Тихая установка без диалоговых окон
Рекомендации по установке необходимых программ
Пакетная установка нескольких программ

Third-party programs changing Firefox settings

Some programs force Firefox to use certain settings. Below is a list of programs known to do this and actions you can take to make them stop forcing Firefox settings:

  • Creative ZenCast changes Firefox’s user agent, interfering with Java.
  • McAfee Privacy Service turns Firefox’s pop-up blocker off.
  • Norton 360 includes a «Firefox Privacy Cleanup» feature that, if enabled, overrides your Firefox Privacy settings and prevents you from keeping your Browsing History, Cookies or other private data between sessions.

Some third-party toolbars and add-ons change Firefox’s home page and search settings. You can quickly reset these with the SearchReset add-onTo reset these, see Change your default search settings in Firefox and How to set the home page.

See Remove a toolbar that has taken over your Firefox search or home page for more information.

User.js file overriding Firefox settings

If you don’t have any of the above programs installed, or ifIf you followed the suggestions and certain settings change back each time you start Firefox, you may have to edit Firefox’s configuration files yourself. Don’t panic, it’s pretty easy. Here’s how to do it.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Open the file user.js with a text editor (like NotepadGedit, Leafpad, or KateTextEdit

    If there is no user.js file, these steps won’t help you.

    ).

  4. Remove the lines for the user preferences you want to be able to change. You can delete all the lines if you want to be able to change everything.
  5. Save the file and close the text editor.

You should now be able to change your Firefox settings.

Delete duplicated Session Restore files

Firefox may be slow to respond or hang if multiple copies of its Session Restore file have been created:

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Locate and delete the sessionstore.js file and any copies, such as sessionstore-1.js, sessionstore-2.js.

Turn off hardware acceleration

With some graphics card and graphics driver setups, Firefox may hang when using hardware acceleration. You can try turning off hardware acceleration to see if it fixes the problem.

  1. Click the menu button and select Options.Preferences.

  2. Select the Advanced panel and the General tab.
  3. Uncheck Use hardware acceleration when available.
  4. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  5. Start Firefox the way you normally do.
  1. Click the menu button and select Options.Preferences.

  2. Select the General panel.
  3. Under Performance, uncheck Use recommended performance settings.Additional settings will be displayed.
  4. Uncheck Use hardware acceleration when available.
  5. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  6. Start Firefox the way you normally do.

If the problem is no longer happening, then hardware acceleration was likely the cause. You can try updating your graphics drivers to see if that fixes it or simply run without hardware acceleration.

Settings may be incorrect

For other session restore problems, you may need to make corrections to your Firefox settings:

  1. Click the menu button and select Options.Preferences.

  2. Select the Privacy & Security panel.
  3. In the History section, make sure that the Firefox will drop-down menu is set to either Remember history or Use custom settings for history.
    • If Firefox will is set to Use custom settings for history then make sure that Always use Private Browsing mode is not selected.
    • If Firefox will is set to Use custom settings for history and Clear history when Firefox closes is selected, then click the Settings button and make sure that Browsing & Download History is not selected.
  4. Close the about:preferences page. Any changes you’ve made will automatically be saved.

Based on information from Session Restore (mozillaZine KB)

Прочее

настройка значение описание
browser.urlbar.trimURLs false Отображать префикс «http://» в адресной строке
privacy.trackingprotection.enabled true Блокировка подозрительных сайтов, которые имеют плохой траст (доверие в сети) и известны своим не совсем корректным поведением в отношении слежки за пользователями. К сожалению, если эту опцию выключить, то не будут отображаться встроенные яндекс-карты с маршрутами
privacy.donottrackheader.enabled true Сообщать сайтам о нежелании отслеживания
dom.popup_maximum 5 Максимальное количество всплывающих окон, открытых одним скриптом
browser.rights.3.shown true Не выводить сообщение о правах использования
startup.homepage_welcome_url Строка приветствия при первом запуске
browser.slowStartup.notificationDisabled true Отключение подсчёта времени запуска браузера с предупреждением, если он медленно стартует
offline-apps.allow_by_default false Не использовать Offline App Cache без явного разрешения со стороны пользователя

Corrupt preferences file

The preferences file may be corrupt, preventing Firefox from writing to it. If you delete this file, Firefox will automatically create another one when it needs to. Here’s how to delete the prefs.js file.

This will remove all your custom settings and settings for many extensions.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.

  3. Locate the prefs.js file (and, if present, the prefs.js.moztmp file).
  4. Delete those files and any prefs-n.js files where n is a number (e.g. prefs-2.js).
  5. Delete Invalidprefs.js if it exists.
  6. Restart Firefox. You should now have all your preferences reset.

Create a new places database

If hangs are periodic, it may be caused by a corrupted places database.

Information: The «places» files store the annotations, bookmarks, favorite icons, input history, keywords, and browsing history (a record of visited pages).

To create a new places database, do the following:

Warning: This will clear your browsing history and remove bookmarks of the day.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.
    Wait until Firefox has completely quit.

  3. In the Firefox profile folder, find and rename the files places.sqlite to places.sqlite.old and places.sqlite-journal to places.sqlite-journal.old

    To rename a file, right-click on it and select rename from the menuclick on it once to select it and then click a second time on the file name to make it editable. Then add .old to the end of its name.

    (if it exists).

  4. Finally, reopen Firefox.

Troubleshoot your extensions

A problematic extension can cause the problem, which can be resolved by disabling or uninstalling the extension. For information on diagnosing and fixing problems caused by faulty extensions, see the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article.

Troubleshoot your Internet security software

Interactions between certain Internet security software (firewall, anti-virus software) is reported to cause hangs on some systems. You can try to configure your firewall to see if it helps the hang go away.

Firefox hangs when Windows resumes from hibernation on Thinkpad

When resuming Windows from hibernation and Firefox hangs for several minutes it might be due to an issue of the pre-installed «ThinkVantage Technologies Power Manager 6». One option to solve this is to uninstall the software. Another option is to check for a later version of the software on the Lenovo support website and see if that fixes the problem. See Bug 1106202 for more details.

Create a new places database

If hangs are periodic, it may be caused by a corrupted places database.

Information: The «places» files store the annotations, bookmarks, favorite icons, input history, keywords, and browsing history (a record of visited pages).

To create a new places database, do the following:

Warning: This will clear your browsing history and remove bookmarks of the day.

  1. Open your profile folder:

    • Click the menu button

      , click Help and select Troubleshooting Information.From the Help menu, select Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section next to Profile FolderDirectory, click Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.

    Note: If you are unable to open or use Firefox, follow the instructions in .

  2. Click the Firefox menu

    and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu

    and select Quit.
    Wait until Firefox has completely quit.

  3. In the Firefox profile folder, find and rename the files places.sqlite to places.sqlite.old and places.sqlite-journal to places.sqlite-journal.old

    To rename a file, right-click on it and select rename from the menuclick on it once to select it and then click a second time on the file name to make it editable. Then add .old to the end of its name.

    (if it exists).

  4. Finally, reopen Firefox.

Choose a different download folder

Firefox may hang if the last download folder location (e.g. a shared volume or USB drive) is no longer available. To fix this:

  1. Click the menu button and select Options.Preferences.

  2. Select the General panel.
  3. Under Downloads, select Save files to and click the ChooseBrowse button.
  4. In the Choose Download Folder window, choose a new folder location.
  5. Close the about:preferences page. Any changes you’ve made will automatically be saved.

See if you are now able to download files or save images. If this works, you can go back to your Firefox settings, if you wish, and select Always ask me where to save my files.

Firefox hangs when you quit it

Sometimes when you close Firefox, it may stop responding and remain in memory, even though no Firefox windows are open. This can prevent Firefox from working properly the next time you open it or you may see a «Close Firefox» dialog box with an error message, Firefox is already running, but is not responding.A copy of Firefox is already open. You must then end all Firefox processes or restart the computer before you can reopen Firefox (see «Firefox is already running but is not responding» error — How to fix for other causes and solutions).

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