当サイトはユーザー体験を改善するためのメンテナンスを実施中に機能が制限される予定です。記事を読んでもあなたの問題が解決せず質問をしたい場合は、Twitter の @FirefoxSupport、Reddit の /r/firefox で、サポートコミュニティが皆さんを助けようと待機しています。

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。

A blank gray box won't go away...why not? How can I get rid of it?

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

more options

Every time I open Firefox, a gray box (about 1in x 1in) appears in the near upper left hand corner of my screen. When Firefox is open (and not hidden) the gray square covers any window that it is located over - this will included any non-Firefox applications. Only when Firefox is exited or hid will the gray square disappear. Please help!! I'd like this square to be gone.

Every time I open Firefox, a gray box (about 1in x 1in) appears in the near upper left hand corner of my screen. When Firefox is open (and not hidden) the gray square covers any window that it is located over - this will included any non-Firefox applications. Only when Firefox is exited or hid will the gray square disappear. Please help!! I'd like this square to be gone.

すべての返信 (3)

more options

This could be a feature of a Firefox add-on. A standard diagnostic to bypass interference by extensions (and some custom settings) is to try Firefox's Safe Mode.

First, I recommend backing up your Firefox settings in case something goes wrong. See Back up and restore information in Firefox profiles. (You can copy your entire Firefox profile folder somewhere outside of the Mozilla folder.)

Next, restart Firefox in Firefox's Safe Mode (Diagnose Firefox issues using Troubleshoot Mode) using

Help > Restart with Add-ons Disabled

In the dialog, click "Start in Safe Mode."

If the site works correctly, this points to one of your extensions or custom settings as the problem.

To further disable add-ons, you can try here:

Tools > Add-ons > Plugins category

Any change?

more options

You can also try to remove the Firefox plist file (org.mozilla.firefox.plist).

Go to "~/Library/Preferences" and remove the plist file for Firefox (org.mozilla.firefox.plist)


You can also check for problems with the localstore.rdf file.

more options

Yes it worked thank you!!! I found the add-on that was triggering it and disabled it!