Error Types on Mozilla Firefox
Firefox was the most popular Web browser from 2009 to 2011 and is an alternative to Microsoft's Internet Explorer, Google's Chrome and Apple's Safari browsers, according to W3Schools. However, Firefox is still prone to specific errors. While frustrating, most of repairs types of errors are straightforward even for the average computer user.
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Adobe Flash Error
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Sometimes while browsing a website with video or animation, Firefox will suddenly slow or freeze and display and error message. The error displays a block with a sad face with the warning "The Adobe Flash plugin has crashed." Reporting the incident by clicking on the link in the error message can help prevent such unexpected crashes. However, you may also need to update Adobe Flash by downloading the most recent version from Adobe's website and restarting Firefox.
Java Error
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Video and gaming sites use Java as a programming language for interactive content. Sometimes the Firefox Java plugin will crash, displaying a block with a sad face like the one displayed with Adobe errors. This problem is usually resolved by closing and relaunching Firefox. However, if it happens again, you may need to update the plugin to the most recent version from the Java website.
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Independent Developer Plugin Errors
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Firefox supports many plugins for various uses, including video, animation, security and even social networking from various independent developers. If an error message ever displays, the first thing to do is close Firefox and restart it. Unexpected errors do happen, especially with a lot of Web browsing. If the error occurs again, send the crash report and update the plugin. You can do this easily by visiting the Firefox "Check Your Plugins" website to update your plugins with one or two clicks.
Firefox Freeze or Crash
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Firefox itself can have an error. A few types of errors may happen to Firefox specifically, the most common being freezing and crashes. Firefox may freeze, which is usually a cache or download issue. Clearing the download history and cache tends to clear up the problem in most cases. To do this, select the Firefox menu at the top left of the browser window, point to the "History" menu and select "Clear Recent History."
If Firefox crashes while browsing, opt to send the crash report when prompted and open Firefox in safe mode. To initiate safe mode, open Firefox, select the Firefox menu, choose "Help" and then click "Restart with Add-ons Disabled." If it works, then you need to update your plugins on the "Check Your Plugins" site. If it doesn't work, type "about:crashes" into the Firefox URL bar and press the "Enter" key. Right-click the most recent crash report ID and select "Open Link in New Tab," which initiates the reporting process.
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