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

Youtube and flash games work, but other sites that use flash don't work

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by John99

more options

Hi-

I'm currently using Firefox 18.0.2 on 2 different computers (Both Win7 64 bit), both with flash 11.6.602.168. Both have roughly the same programs installed and the same browser configuration. However, on one machine, flash works only on some sites. For instance, Youtube works perfectly, as do dedicated flash games. However, sites that use embedded flash applications fail to work. For instance, if I visit www.speedtest.net, where the test options normally appear is completely blank. Similarly, other video players fail. For example, videos in www.cbsnews.com play sound, but where the video should be is just white. I've tried completely uninstalling both firefox as well as flash, and installing previous versions, nothing has worked.

Hi- I'm currently using Firefox 18.0.2 on 2 different computers (Both Win7 64 bit), both with flash 11.6.602.168. Both have roughly the same programs installed and the same browser configuration. However, on one machine, flash works only on some sites. For instance, Youtube works perfectly, as do dedicated flash games. However, sites that use embedded flash applications fail to work. For instance, if I visit www.speedtest.net, where the test options normally appear is completely blank. Similarly, other video players fail. For example, videos in www.cbsnews.com play sound, but where the video should be is just white. I've tried completely uninstalling both firefox as well as flash, and installing previous versions, nothing has worked.

All Replies (1)

more options

I guess it is a process of elimination, what is different ?

I would first of all check and experiment with Adobe FlashPlayer protected mode setting.

Also have you any filtering, adblock or security related programs installed which may block video or scripts. With you-tube check is it actually using Flash player,and not trying to use any HTML5 options so check any options and cookies.