We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

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.

Learn More

Mes options changent régulièrement automatiquement

  • 1 reply
  • 3 have this problem
  • 12 views
  • Last reply by cor-el

more options

Régulièrement, certaines de mes options changent automatiquement. Les applications pour ouvrir certains fichiers, la vie privée (indiquer que je ne veux pas être pisté, supprimer l'historique en quittant). Que faire ?

Régulièrement, certaines de mes options changent automatiquement. Les applications pour ouvrir certains fichiers, la vie privée (indiquer que je ne veux pas être pisté, supprimer l'historique en quittant). Que faire ?

All Replies (1)

more options

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window

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


There is software like Advanced SystemCare with its Surfing Protection feature that can protect files in the Firefox profile folder against changes. If you have such software then check the settings or uninstall this software.