Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Pesquisar no site de suporte

Evite golpes de suporte. Nunca pedimos que você ligue ou envie uma mensagem de texto para um número de telefone, ou compartilhe informações pessoais. Denuncie atividades suspeitas usando a opção “Denunciar abuso”.

Learn More

Every time i try to re-open firefox, it says i have an existing firefox still running that isn't responding and i need to close that or restart my system.

  • 1 resposta
  • 3 têm este problema
  • 1 visualização
  • Última resposta de SafeBrowser

more options

I close down Firefox and try to re-open it. When i do, i get this....

Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.

I close down Firefox and try to re-open it. When i do, i get this.... Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.

Todas as respostas (1)

more options

Sounds like Firefox is "hanging at exit". That problem is frequently caused by an Extension or a Plugin. Read all of the following articles.

NOTE: Establish a habit of exiting/closing Firefox with Firefox button > Exit or File > Exit to allow an orderly shutdown of Firefox and closing of all of the files that Firefox has open.


  1. Stop the Firefox process:
  2. Why Firefox may hang:
  3. Use Firefox Safe Mode to find a problem with an Extension or Plugin:


If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.

Alterado por SafeBrowser em