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

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。

I get the following message every time I close firefox from File Exit, and try to open again: existing Firefox process, or restart your system

  • 1 件の返信
  • 6 人がこの問題に困っています
  • 306 回表示
  • 最後の返信者: TonyE
  • アーカイブに保管済み

  1. Question

I get the following message every time I close firefox from File/Exit, and try to open again: Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system. I have to re-start every time.

# Question I get the following message every time I close firefox from File/Exit, and try to open again: Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system. I have to re-start every time.

すべての返信 (1)

See "Firefox is already running but is not responding" error - How to fix. It sounds like in your case Firefox is not closing properly, in which case the "Hang at exit" section of the Firefox hangs or is not responding - How to fix article is relevant.