Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Mozilla サポートの検索

サポート詐欺に注意してください。 私たちはあなたに通話やショートメッセージの送信、個人情報の共有を求めることはありません。疑わしい行為を見つけたら「迷惑行為を報告」からご報告ください。

詳しく学ぶ

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

Sound doesn't play in Youtube videos.

  • 3 件の返信
  • 20 人がこの問題に困っています
  • 139 回表示
  • 最後の返信者: natwhit2

natwhit2
natwhit2

When I watch a Youtube video in Firefox, there is no sound. The same video has sound if I watch it in Chrome. Also, other types of videos have sound in Firefox. This started happening a few weeks ago. Until then the sound worked fine.

I have Windows 7 and Firefox 23.0.1.

When I watch a Youtube video in Firefox, there is no sound. The same video has sound if I watch it in Chrome. Also, other types of videos have sound in Firefox. This started happening a few weeks ago. Until then the sound worked fine. I have Windows 7 and Firefox 23.0.1.

選ばれた解決策

Thank you all for you efforts. None of the suggestions solved the problem. However, the sound has started playing again on its own. I don't know why it stopped working & I don't know why it resumed working. But it is working now. Thanks again.

この回答をすべて読む 👍 0

すべての返信 (3)

iamjayakumars
iamjayakumars

Check your Flash is uptodate

Fix common sound issues

cor-el
cor-el

Try to uninstall and reinstall Flash.

natwhit2
natwhit2 質問者

選ばれた解決策

Thank you all for you efforts. None of the suggestions solved the problem. However, the sound has started playing again on its own. I don't know why it stopped working & I don't know why it resumed working. But it is working now. Thanks again.