This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

flash player not works in firefox windows

more options

I'm using anf testing firefor nightly for many years. is my favorite browser. it works great. i'm testing now, 19 and 20 versions. I use Linux and Windows versions. My system is windows 7, 64 bits, the problem occurs in the firefox 20 32 bits and 16, 32 and 64 bits. only windows firefox have the problem. for post this message,i'm using momentanously seamonkey, since my webmailer needs flash, and falsh not working in this moment in firefox.

I'm using anf testing firefor nightly for many years. is my favorite browser. it works great. i'm testing now, 19 and 20 versions. I use Linux and Windows versions. My system is windows 7, 64 bits, the problem occurs in the firefox 20 32 bits and 16, 32 and 64 bits. only windows firefox have the problem. for post this message,i'm using momentanously seamonkey, since my webmailer needs flash, and falsh not working in this moment in firefox.

Modified by albfneto

All Replies (1)

more options

Disable hardware acceleration.

Tools -> Options -> Advanced -> General -> Browsing: "Use hardware acceleration when available"

If disabling hardware acceleration works then check if there is an update available for your graphics display driver.

   https://support.mozilla.org/kb/how-do-i-upgrade-my-graphics-drivers 

Try to "disable the hardware acceleration" in the Flash Player.

   http://helpx.adobe.com/flash-player/kb/video-playback-issues.html 

See also:

   https://support.mozilla.org/en-US/kb/keep-flash-up-to-date-and-troubleshoot-problems