搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

Learn More

unable to play videos from youtube on firefox

  • 7 回覆
  • 275 有這個問題
  • 13 次檢視
  • 最近回覆由 BrendaL

more options

I am unable to play youtube videos on Firefox after the updates. Firefox works great with Facebook but can no longer play videos there. I have down loaded adobe flash player it wont work either I dont know what else to do. I have windows 7. Please help.

I am unable to play youtube videos on Firefox after the updates. Firefox works great with Facebook but can no longer play videos there. I have down loaded adobe flash player it wont work either I dont know what else to do. I have windows 7. Please help.

所有回覆 (7)

more options

Do you see the Flash plugin on the Tools > Add-ons > Plugins and the about:plugins page?

Does the Flash test site confirm that the Flash player is installed?

more options

The same here. No video on youtube at all, suddenly. I have latest flash player installed.

more options

Download CCleaner, scan and clean....then problem will be solved ;) I fixed mine that way.

more options

The latest Adobe Flash plugin adds a 64-bit player as well as the standard 32-bit player. Youtube seems to set a cookie that conflicts with the 64-bit version and therefore causes you to see a black screen when trying to play videos. The following steps should fix your issue if it is related to this update:

  1. Click the Firefox menu on the top left (or the Tools menu if you use the menu bar).
  2. Go to History -> Clear Recent History (Omit first part from the Tools menu).
  3. Make sure both Cookies and Cache are check-marked (feel free to uncheck everything else)
  4. Set the Time range to clear drop-down box to Everything.
  5. Click the Clear Now button.

You should now be able to play Youtube (and presumably) other videos again. Doing this worked for me anyway...

由 Ketonom 於 修改

more options
more options

This did not resolve the problem for me. Sadly. Videos play OK one IE but I don't use it as a rule.

more options

This is a Flash player issue - I uninstalled the latest Flash Player and reinstalled Flash 10.3 and everything seems to be working again.

(Youtube videos were just coming up as a black box with a play button - when I pressed this I got the message "An error has occurred - please try later"