Other installed software that is running on your computer may be causing Firefox to crash. Try setting the javascript.options.*jit.* preferences to false in about:config ( see below). Firefox Safe Mode also disables the JavaScript JIT compiler.Try unchecking the option to use hardware acceleration in Firefox (" Tools -> Options -> Advanced / General"). In Firefox 4 and above, Firefox Safe Mode also disables hardware acceleration, so the problem could be a video device or driver issue ( see below).If disabling all extensions and restarting Firefox in normal mode doesn't resolve the crash problem: Try re-enabling them one at a time, to find the problem extension. If the crashes no longer occur when you run Firefox in normal mode with all extensions disabled, one of your extensions was causing Firefox to crash. If Firefox no longer crashes when you run in Firefox Safe Mode, go to the Add-ons Manager Extensions list, click the Disable button for every extension, and restart Firefox normally. Note: If Firefox also crashes in Firefox Safe Mode, then an extension is not the problem and you should skip to the next section. This will help determine if an extension is causing the problem, since Safe Mode disables all extensions. Start in Firefox Safe Mode and click "Start in Safe Mode" ("Continue in Safe Mode" in Firefox 14 and below). Problematic extensions may cause crashes. 6 Crash when choosing a file or folder location - Windows.4 Crash when closing a tab or exiting Firefox.QuickTime supports the latest version of Firefox as well as old versions of Firefox. See Apple’s QuickTime support website for more information about using the QuickTime plugin in Firefox. Mozilla maintains a list of commonly-used third-party plugins on its official add-ons website. Other plugins are available for playing Adobe Flash, Sun Java, PDF, Windows Media, and RealPlayer content on web pages in Firefox. If it’s grayed out, click it and click the “Enable” button. Verify that the QuickTime plugin for Firefox is in the list and not grayed out. Open it by clicking “Tools” and “Add-Ons” in the Firefox window, then clicking the “Plugins” icon at the top of the add-ons window. You can use Firefox’s integrated plugins manager to view and manage your installed browser plugins, including the QuickTime plugin. You can customize whether movies should start playing automatically in your browser, whether to hide QuickTime setting option in the browser, and set which file types the browser plugin plays from this tab. Open the QuickTime player application by clicking “Start,” “All Programs,” “QuickTime” and “QuickTime Player.” Click “Edit,” “Preferences” and “QuickTime Preferences” in the QuickTime window and then click the “Browser” tab. Update QuickTime by clicking “Start,” “All Programs” and “Apple Software Update.” Click the checkbox to the left of an updated version and click “Install.” The Apple Software Update application also updates other Apple software installed on your computer, such as iTunes and the Safari web browser. Updated versions are frequently released which patch security bugs using old versions of Firefox plugins puts your computer and private data at risk online. Updating QuickTime and other browser plugins regularly is important. Open it by clicking “Start,” “All Programs,” “QuickTime” and “QuickTime Player.” Update QuickTime You can also play videos in the QuickTime desktop application. Close all open Firefox windows and re-open one. If you don’t see the videos, make sure you restarted Firefox after installing the QuickTime plugin. The video starts playing inside the web page, just like Flash videos do on YouTube and on other web pages. Navigate to a website containing an embedded QuickTime video in Firefox, such as the Apple movie trailers website. Restart Firefox to enable the QuickTime plugin by closing all open Firefox windows and opening Firefox again. QuickTime installs automatically click “Finish” when it’s done installing. Click “Download Now,” save the QuickTimeInstaller.exe file to your computer and double-click it after it finishes downloading.Ĭlick “Next,” “Yes” and “Install” in the QuickTime installation wizard. You can download Apple’s QuickTime plugin for Firefox on Apple’s website here.
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