Malware is short for "Malicious Software". It is a term generally used for software installed on your computer that is designed to infiltrate or damage a computer system without the owner's informed consent. Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of. This article describes what common symptoms are and how to prevent malware from being installed and get rid of them. Fix Firefox Error How do I know that my Firefox problem is a result of malware? Symptoms are various and depend on the malware but if you have one or several of these behaviors, you may have malware installed on your computer. Some ad popups display all the time , although you've blocked popups. For more information on blocking popups, see Pop-up blocker settings, exceptions and troubleshooting. Your searches are redirected to another site in order to feed you content from that website and you are being disallowed from blocking t...
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Fix common audio and video issues
Sometimes, the video or audio content in a web page cannot be properly downloaded and displayed in Firefox. This article will help you solve these problems. Fix Firefox Error Allow autoplay of media with sound Firefox may be blocking media with sound from playing automatically. To allow media autoplay, see Allow or block media autoplay in Firefox. HTML5 audio and video Firefox has built in support for open media formats usually associated with MP3, WebM, Ogg and Wave containers. However, MP4 containers usually depend on platform decoders for AAC and H.264 audio and video streams. For more information, see Fix video and audio playback problems on Firefox for Windows and HTML5 audio and video in Firefox. Clear the cache See How to clear the Firefox cache. Disable interfering extensions or ad-blocking software Ad-blocking software, such as anti-banner filters of your Internet Security program, or extensions, such as Flashblock or Adblo...
Firefox can't load websites but other browsers can
This article describes problems where Firefox cannot load websites but other Web browsers (such as Internet Explorer ) can. When this happens, Firefox may show a Server not found or Unable to connect error message. Fix Firefox Error For other error messages that display when you try to view websites in Firefox, see Websites don't load - troubleshoot and fix error messages. If none of the Web browsers on your computer can load websites, see Firefox and other browsers can't load websites. Internet Security software blocking Firefox If you were able to load websites until you updated Firefox or until your Internet security software was updated, reconfigured or a new one was added, your Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more) is likely preventing Firefox from connecting to the Internet. In general, you should make sure your Internet security software is up-to-...
Troubleshoot and diagnose Firefox problems
Most problems with Firefox can be fixed by following the troubleshooting methods described below. Try these steps in order. If one doesn't work, move on to the next one. If you need extra help with any of this, we have Fix Firefox Error . 1. Restart your computer Sometimes problems can be fixed by simply restarting your computer and then starting Firefox again. 2. Clear your cookies and cache Many problems with loading web pages can be resolved by clearing Firefox's cookies and cache: Click the Library button on your toolbar. (If you don't see it there, click the menu button then click Library .) Click History and select Clear Recent History… . In the Time Range to clear: drop-down, select Everything . Below the drop-down menu, select both Cookies and Cache . Make sure other items you want to keep are not selected. Click Clear Now . . Restart Firefox in Safe Mode Firefox Safe Mode is a trouble...