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Can't Hear Sound in Firefox


Well I am having problems hearing sound in firefox. I can hear sound in Internet Explorer though. The problem happens when I visit sites like youtube and want to watch the video. The video plays but their is no sound. I have updated my flash player according to the instructions found on this site and also tried the troubleshooting suggestions and the problem is still present.

This happened

Every time Firefox opened

== 4 days ago

Additional System Details

Installed Plug-ins

  • -getplusplusadobe16263
  • 1.9.0009.1
  • Adobe PDF Plug-In For Firefox and Netscape
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Default Plug-in
  • Shockwave Flash 10.1 r53
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • Next Generation Java Plug-in 1.6.0_20 for Mozilla browsers
  • DRM Store Netscape Plugin
  • DRM Netscape Network Object
  • Npdsplay dll


  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20100625 Firefox/3.6.6

More Information

Java Console 6.0.17 true
Java Console 6.0.20 true
AI Roboform Toolbar for Firefox 6.9.98 true {22119944-ED35-4ab1-910B-E619EA06A115}
Java Quick Starter 1.0 true jqs@sun.com
NoScript true {73a6fe31-595d-460b-a920-fcc0f8843232}
SEO For Firefox 3.3.3 true seo4firefox@seobook.com
SearchStatus 1.33 true
Adobe DLM (powered by getPlus(R))
Shockwave Flash
getPlusPlus for Adobe 16263
Windows Genuine Advantage
Adobe Acrobat
Java Deployment Toolkit
Mozilla Default Plug-in
RealOne Player Version Plugin
RealPlayer(tm) G2 LiveConnect-Enabled Plug-In (32-bit)
RealJukebox NS Plugin
Java Deployment Toolkit
Java(TM) Platform SE 6 U20
Microsoft® DRM
DRM Store Netscape Plugin
Microsoft® DRM
DRM Netscape Network Object
Windows Media Player Plug-in Dynamic Link Library

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10762 solutions 96861 answers

Try to uninstall and reinstall Flash.

Flash Player uninstall: http://www.adobe.com/go/tn_14157 (this will remove the Firefox Flash plugin and the ActiveX control for IE) --- See also What to do if Firefox won't play any sounds and Fix common audio and video issues

Bill5040 0 solutions 13 answers

Helpful Reply

This problem just started this past week. I can see videos but can't hear them on certain sites like YouTube and PlanetPulse at http://www.dailyhoroscope.com/free-horoscopes/videos/planet-pulse-astrology/?feature=dhe-email-tarot-planet-pulse&utm_source=dhe&utm_medium=email&utm_content=dhe-email-tarot-planet-pulse&utm_campaign=promo-code&. I don't have the same problem on Bloomberg.com video or any other URL. When I download videos from YouTube to RealPlayer, I can play them with sound all right. I read your Tips for this problem. I uninstalled Adobe Flash and re-installed it not only using FireFox but also using Explorer. I used the 32 & 64 bit version. I even re-booted my computer but nothing helps. I have Windows 7 and the latest version of FireFox. All my FireFox plugins are up to date too. What can I do? This problem just started last week.

Bill5040 0 solutions 13 answers

SUCCESS - I now have sound restored to my videos on YouTube and Planet Pulse videos. Here's what I did: I read the info above and uninstalled Flash Player using their uninstaller. I rebooted my PC. I went to Flash Player Help | Find Version at: http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html#main_Find_the_Flash_Player_version_installed_on_your_machine and went step by step through their Support provided. I then went to: http://helpx.adobe.com/flash-player/kb/flash-player-games-video-or.html because I still had no sound with the new installation of Flash Player. I think the single MOST IMPORTANT thing I did was in Step 7: Disable Flash Player hardware acceleration and had to deselect Enable Hardware Acceleration. Then I could hear the sound with my videos again!

Modified by Bill5040