Ce site disposera de fonctionnalités limitées pendant que nous effectuons des opérations de maintenance en vue de vous proposer un meilleur service. Si un article ne règle pas votre problème et que vous souhaitez poser une question, notre communauté d’assistance est prête à vous répondre via @FirefoxSupport sur Twitter, et /r/firefox sur Reddit.

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

En savoir plus

New installation but on startup says Firefox is alredy running end other version. Occurred on Windows 7 and now Windows 10. How to fix?

  • 4 réponses
  • 1 a ce problème
  • 1 vue
  • Dernière réponse par cor-el

more options

Firefox started to say it was already running on startup in Windows 7 but it was not as computer had been shut down and restarted, old firefox uninstalled and computer restarted then new installation - same after upgrade to Windows 10 what is problem? and how to solve

Firefox started to say it was already running on startup in Windows 7 but it was not as computer had been shut down and restarted, old firefox uninstalled and computer restarted then new installation - same after upgrade to Windows 10 what is problem? and how to solve

Toutes les réponses (4)

more options

On Windows, start the Task Manager. (Other systems may have different names and / or commands). Select Processes. Look down the list for Firefox. Right click and select End Task. If this problem keeps coming up, ask for more help.

more options

Tried that before posting question - did not help.

more options

hello DragondHN

Can you please confirm if there is at all a background process running . As already suggested,can you please open up TaskManager,look under the Processes/Details tab for any instance of firefox.exe,i would suggest you to go through the whole list.

more options

Try to delete the parent.lock file in the Firefox profile folder.

  • C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>\

"AppData" (XP: Application Data; Mac: ~/Library; Linux: ~/.mozilla) is a hidden folder.


Modifié le par cor-el