Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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。

How do I get my Persona to stay?

  • 3 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: cor-el

more options

A while ago (sorry, can't remember exact date, around January or February) my Firefox browser got an update and reverted the downloaded Persona I had to the default one. And after that whenever I set the one I want it wouldn't stay. Whenever I close the browser and open a new one it reverts to said default Persona.

A while ago (sorry, can't remember exact date, around January or February) my Firefox browser got an update and reverted the downloaded Persona I had to the default one. And after that whenever I set the one I want it wouldn't stay. Whenever I close the browser and open a new one it reverts to said default Persona.

すべての返信 (3)

more options

You can check for problems with preferences.

Rename or delete the prefs.js file and possible numbered prefs-##.js and user.js files to reset all prefs to the default value.

more options

Sorry, I tried that but it didn't work. Kinda frustrating, don't wanna reset every time I open a new browser.

more options

The data of all installed Personas and its background color and text color are stored in the lightweightThemes.usedThemes pref in JSON object format ({"id":"#","name":"xxx",...}).
The first entry of that pref is the currently selected Persona.


Make sure that you do not run Firefox in (permanent) Private Browsing mode (Never Remember History).

  • Tools > Options > Privacy > Firefox will: "Use custom settings for history"
  • Deselect: [ ] "Always use private browsing mode"