Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Pesquisar no apoio

Evite burlas no apoio. Nunca iremos solicitar que telefone ou envie uma mensagem de texto para um número de telefone ou que partilhe informações pessoais. Por favor, reporte atividades suspeitas utilizando a opção "Reportar abuso".

Saber mais
Esta discussão foi arquivada. Se precisar de ajuda, por favor, coloque uma nova questão.
Arquivadas

Firefox won't start up

Firefox Resolução de problemas
Kiki replied
janhsvec
janhsvec

When I try to start Firefox, the following dialog box appears:

XUL Runner Error: Platform version 128.0.3 not compatible with minVersion >= 128.0 maxVersion <= 128.0

Clicking the OK button closes the attempt to start Firefox.

Do I need to reinstall the latest version? If I do, will all my info be saved? Jan

When I try to start Firefox, the following dialog box appears: XUL Runner Error: Platform version 128.0.3 not compatible with minVersion >= 128.0 maxVersion <= 128.0 Clicking the OK button closes the attempt to start Firefox. Do I need to reinstall the latest version? If I do, will all my info be saved? Jan

Todas as respostas (1)

Kiki
Kiki
  • Líder do idioma
  • Administrador
  • Moderador
  • 10 Melhores Colaboradores
Mozilla Staff

Hi janhsvec,

This is a known issue caused by a corrupted installation after a failed update. The workaround is to uninstall and then re-install Firefox to fix this issue while our team is working on a more permanent fix. You shouldn't lose any data if you download the full installer from our official source.

Sorry about the inconvenience!