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!

Este site está com funcionalidades limitadas enquanto realizamos manutenção para melhorar sua experiência de uso. Se nenhum artigo resolver seu problema e você quiser fazer uma pergunta, nossa comunidade de suporte pode te ajudar em @FirefoxSupport no Twitter e /r/firefox no Reddit.

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”.

Saiba mais

Esta discussão foi arquivada. Faça uma nova pergunta se precisa de ajuda.

How do I uninstall firefox 4 and use the previous version. I do lots of work related tasks that require quick time to work and it doesn't with ff4.o.

  • 1 resposta
  • 2 têm este problema
  • 1 exibição
  • Última resposta de cor-el

more options

Quick time crashes and I have lost almost all sounds/video sound capability with the new ff4.0. I want to remove it and replace it with the previous version until the bugs are fixed.

Quick time crashes and I have lost almost all sounds/video sound capability with the new ff4.0. I want to remove it and replace it with the previous version until the bugs are fixed.

Todas as respostas (1)

more options

Maybe wait another day because Firefox 5.0 will be released on June 21 and maybe that version works better.


Make sure that you allow the plugin-container process in the firewall and other security software.


See also:

You can click the Volume icon on the Windows Taskbar near the clock and click the Mixer link at the bottom to open the mixer.
You can adjust the volume level for each application in that window, so make sure that Firefox is not muted or set at a low level.
You will only see the Firefox program in the Mixer if you are on a website that plays sound.
Also check the volume setting for the plugin-container process.