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

modified default preferences do not load properly(untill firefox is reset)

  • 4 respuestas
  • 2 tienen este problema
  • 4 visitas
  • Última respuesta de stewievader

more options

i am trying to modify some of the default preferences loaded by firefox , using https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/A_brief_guide_to_Mozilla_preferences (changing defaults section).

however after adding the file they will not load unless firefox is reset, though this should be necessary. same thing happens on a new profile until firefox is reset on there aswell

how do i get firefox to load these modified default preferences without having to go and reset firefox on every single user account.

i am trying to modify some of the default preferences loaded by firefox , using https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/A_brief_guide_to_Mozilla_preferences (changing defaults section). however after adding the file they will not load unless firefox is reset, though this should be necessary. same thing happens on a new profile until firefox is reset on there aswell how do i get firefox to load these modified default preferences without having to go and reset firefox on every single user account.

Modificadas por stewievader el

Todas las respuestas (4)

more options
more options

no i can save preferences just fine whether its in the default options menu or about:config.

the problem is when i place an all_xxxx.js file with modified default preferences in (install_directory/defaults/prefs/) Firefox does not load these modified pref's unless i use reset firefox under troubleshooting information. once i do that it loads the file just fine,but has to be done for every user account

since im unfamiliar with this its possible i misunderstood/messed up something, so heres a copy of that js file

more options

Files placed in /defaults/prefs/ are only copied to a newly created profile, so this behavior is to be expected.

If you want to modify prefs directly for all profiles then you need to use a mozilla.cfg file in the main Firefox program folder.


Use a mozilla.cfg file in the Firefox program folder to lock prefs or specify new (default) values.

Place a file local-settings.js in the defaults\pref folder where you also find the file channel-prefs.js to specify using mozilla.cfg.

pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0); // use this to disable the byte-shift

See:

These functions can be used in the mozilla.cfg file:

defaultPref();  // set new default value
pref();         // set pref, but allow changes in current session
lockPref();     // lock pref, disallow changes

Modificadas por cor-el el

more options

thanks,then that article needs to be changed...it states that it applys over new and existing profiles.