This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Buscar en Ayuda

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I keep getting an unexpected error (203) when trying to install plugins/themes.

  • 4 respuestas
  • 50 tienen este problema
  • 4 visitas
  • Última respuesta de mommybud

more options

I can download themes and plugins, but when I try to install them, I get

Firefox cannot install >>>>> We have experienced an unexpected error (203).

Please help???

I can download themes and plugins, but when I try to install them, I get Firefox cannot install >>>>> We have experienced an unexpected error (203). Please help???

Solución elegida

You're welcome. Please mark this as solved.

Leer esta respuesta en su contexto 👍 0

Todas las respuestas (4)

more options
more options

Following the instructions to rename the extensions.xxx files, then reload Firefox worked! Suddenly quite a few add-ins installed!

Thank you!

- Mommybud

more options

Solución elegida

You're welcome. Please mark this as solved.

more options

You were awesomely effective and quick! xD