Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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.

Checkboxes Missing in Options

  • 3 பதிலளிப்புகள்
  • 2 இந்த பிரச்னைகள் உள்ளது
  • 7 views
  • Last reply by cor-el

bhcl
bhcl
more options

I want to set Firefox to warn before closing multiple tabs but the checkbox to do so is missing from the Tabs section in Options. I noticed the " Warn me when opening multiple tabs might slow Firefox down" checkbox is not there either. How do I get the missing checkboxes back?

I want to set Firefox to warn before closing multiple tabs but the checkbox to do so is missing from the Tabs section in Options. I noticed the " Warn me when opening multiple tabs might slow Firefox down" checkbox is not there either. How do I get the missing checkboxes back?
Attached screenshots

bhcl மூலமாக திருத்தப்பட்டது

All Replies (3)

bhcl
bhcl கேள்வியின் உரிமையாளர்
more options

The upload of the screencap didn't get through earlier, here it is.

FredMcD
FredMcD
more options

Type about:config<enter> in the address bar. If a warning screen comes up, press the Be Careful button. At the top of the screen is a search bar. Type browser.tabs.warnOnClose and set it to true

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

The Tab warn items in "Options/Preferences > General or Tabs" are hidden when the related prefs have the default value and warnings are enabled. They only show when you toggle the related prefs on the about:config page. Note that this may require to close and restart Firefox.

  • "Warn me when closing multiple tabs" (browser.tabs.warnOnClose: true)
  • "Warn me when opening multiple tabs might slow down Firefox" (browser.tabs.warnOnOpen: true)