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

Spell check not working on Firefox 29.0.1

  • 7 replies
  • 26 have this problem
  • 4226 views
  • Last reply by Area117

more options

I have installed the English (UK) dictionary, checked that the box is ticked to check my spelling, but still it won't work.

Chosen solution

Only the en-US and maybe fr and maybe a couple others of Thunderbird and Firefox come with a dictionary due to licensing reasons.

Read this answer in context 👍 1

All Replies (7)

more options

You can see which dictionary is selected if you right-click in a text area and open the Languages submenu. At least one dictionary should be installed and have a check mark to indicate that it is selected.

  • Open the "Add Dictionaries" link to install a dictionary if you do not have one.
  • Make sure that [X] "Check Spelling" in the right-click context menu is check-marked.

You can enable or disable spell checking globally:

  • Tools > Options > Advanced : General: Browsing: "Check my spelling as I type"

You can look here for dictionaries:


Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window
more options

Thanks but has made no difference what so ever. I have installed English Dictionary and spell check.

more options

In what way is the spell checker not working?

Are all words underlined or none?

What is the value of the spellchecker.dictionary pref on the about:config page?

  • spellchecker.dictionary
  • layout.spellcheckDefault
  • ui.SpellCheckerUnderline
  • ui.SpellCheckerUnderlineStyle
more options

Its working now :D I had to uninstall Firefox. I had the English (UK) edition. Now I have the US version and it works. But still puzzled why the UK version wouldn't spell check.

more options

The UK version doesn't come with a spell checking dictionary and this dictionary needs to be installed separately.

more options

Chosen Solution

Only the en-US and maybe fr and maybe a couple others of Thunderbird and Firefox come with a dictionary due to licensing reasons.

more options

That is what I had done before. Ill leave it with the US version. Thanks for your help :)