Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Can't set any preferences

  • 1 cavab
  • 1 has this problem
  • 2 views
  • Last reply by cor-el

more options

Since the 91 update, I can't configure any preferences in Firefox. The boxes are there, but I can't check them. The only way I know if they've been checked is to see how Firefox behaves! Surely this is some kind of bug???

Portions of the Settings panel cannot be set:

General, Search, Privacy & Security - anything that has a box to be checked or unchecked, I cannot check. I therefore do not know ANY of my settings! Please help!


Also, when I pull up the settings page, once I leave the page, I have to pull it back up again - it doesn't stay but reverts back to the new tab page. Most annoying.

Surely this cannot be correct!

Since the 91 update, I can't configure any preferences in Firefox. The boxes are there, but I can't check them. The only way I know if they've been checked is to see how Firefox behaves! Surely this is some kind of bug??? Portions of the Settings panel cannot be set: General, Search, Privacy & Security - anything that has a box to be checked or unchecked, I cannot check. I therefore do not know ANY of my settings! Please help! Also, when I pull up the settings page, once I leave the page, I have to pull it back up again - it doesn't stay but reverts back to the new tab page. Most annoying. Surely this cannot be correct!
Attached screenshots

All Replies (1)

more options

This happens if you have set browser.proton.enabled = false to disable Proton.

In Firefox 91+ you can no longer disable Proton via "browser.proton.enabled = false". Best is to leave browser.proton.enabled at its default value true as this pref still has effect.


In Firefox 91+ you will have to use code in userChrome.css to override changes coming with the Proton design.