Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Mozilla サポートの検索

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.

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。

When I open firefox browser my firefox taskbar icon shows 3 tabs open but firefox browser itself only shows 2.

  • 1 件の返信
  • 1 人がこの問題に困っています
  • 1 回表示
  • 最後の返信者: FredMcD

more options

PC OS is Windows 10 Firefox Browser Version 50 When I click on the blank tab in the taskbar the blank tab opens but will never list in the menu bar. Wouldn't be able to access that tab otherwise.

PC OS is Windows 10 Firefox Browser Version 50 When I click on the blank tab in the taskbar the blank tab opens but will never list in the menu bar. Wouldn't be able to access that tab otherwise.
添付されたスクリーンショット

すべての返信 (1)

more options

It might be that's in a separate window.

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options)
key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh).

Is the problem still there?