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I have been using Firefox for years but recently when I tried to watch some videos on Facebook that my friend had uploaded, I was unsuccessful.Can someone help?

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  • 最後の返信者: cor-el

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Whenever I would try to watch a video posted by someone on Facebook, nothing would happen when I pressed the 'play' button. With Internet Explorer, however, the video would play normally.

Whenever I would try to watch a video posted by someone on Facebook, nothing would happen when I pressed the 'play' button. With Internet Explorer, however, the video would play normally.

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Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).


I also noticed that some software has change the keyword.URL pref that sets how searches via the locaction bar are done.

See:

You can try to use this extension to reset the search settings.