We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

Avatar for Username

Search Support

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

This thread was archived. Please ask a new question if you need help.

Why does Firefox , Thunderbird ignore my english US settings ?

  • 2 replies
  • 1 has this problem
  • 7 views
  • Last reply by FredMcD

ecoalex1
ecoalex1
more options

Even tho I have english US as my default language, in word processing windows, and emails my spell check continues to show english british red underlining. I checked my settings, it does show english US. OS: Linux Mint 17

Even tho I have english US as my default language, in word processing windows, and emails my spell check continues to show english british red underlining. I checked my settings, it does show english US. OS: Linux Mint 17

All Replies (2)

alex_mayorga
alex_mayorga
  • Moderator
more options

¡Hola Alex!

Please install the "English (US)" dictionary from https://addons.mozilla.org/en-US/firefox/language-tools/

Let us know if this answers your question.

¡Gracias! Alex

FredMcD
FredMcD
more options

https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save

Note: Some software, like Advanced SystemCare with Surfing Protection, can protect files in the Firefox profile folder against changes. If you have such software then check the settings or uninstall this software.