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

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

Firefox changes "%" to "_" when downloaded filenames contain "%" character

  • 3 respostas
  • 3 têm este problema
  • 40 visualizações
  • Última resposta por zeroknight

Pretty niche problem, but I couldn't find anyone else with the same kind of problem. Whenever I try to download a file with "%" on its filename, the "%" character gets changed to an underscore. Like say, if I try to download a file named "Skyrim 100% save file", it becomes "Skyrim 100_ save file". Not sure why this is even happening, but it only happens in Firefox. Not Chrome nor Edge.

Pretty niche problem, but I couldn't find anyone else with the same kind of problem. Whenever I try to download a file with "%" on its filename, the "%" character gets changed to an underscore. Like say, if I try to download a file named "Skyrim 100% save file", it becomes "Skyrim 100_ save file". Not sure why this is even happening, but it only happens in Firefox. Not Chrome nor Edge.

Todas as respostas (3)

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.

  • switch to the Default System theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window

None of this worked for me unfortunately. The same problem pops up whether I'm in troubleshoot mode or not/has hardware acceleration enabled/disabled. Never really enabled userChrome customization too. Maybe there's something in the about:config page that's causing it? Or could this be a bug in the browser itself?

Can you link an example file download where you see this?