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。

Since the last update, whenever I close and reopen Firefox, my default search engine changes back to Google. What's going on?

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

more options

Since the last update, whenever I close and reopen Firefox, my default search engine changes back to Google. I have to manually change it back to my preferred engine. Is anyone else having this problem, and if so, how can I permanently change my search provider, instead of having to manually change it again every time I start Firefox?

Since the last update, whenever I close and reopen Firefox, my default search engine changes back to Google. I have to manually change it back to my preferred engine. Is anyone else having this problem, and if so, how can I permanently change my search provider, instead of having to manually change it again every time I start Firefox?

すべての返信 (1)

more options

You can use the SearchReset extension to reset some preferences to the default values.

Note that the SearchReset extension only runs once and then uninstalls automatically, so it won't show on the "Firefox > Add-ons" page (about:addons).

If you do not keep changes after a restart or otherwise have problems with preferences, see:


Try to delete the search.json file and possible search-metadata.json and search.sqlite files in the Firefox profile folder to reset the search engines to the default.

Firefox will rebuild the search.json file from the default search engines in the "browser\searchplugins" folder in the Firefox program folder and the searchplugins folder in the Firefox profile folder.

You can use this button to go to the currently used Firefox profile folder: