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!

Om de ûnderfining foar jo te ferbetterjen is tydlik de funksjonaliteit dan dizze website troch ûnderhâldswurk beheind. Wannear in artikel jo probleem net oplost en jo in fraach stelle wolle, kin ús stipemienskip jo helpe yn @FirefoxSupport op Twitter en /r/firefox op Reddit.

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

Settings such as Experiments are turned on after updates

  • 1 antwurd
  • 0 hawwe dit probleem
  • 1 werjefte
  • Lêste antwurd fan zeroknight

more options

Hello, I hope your day is going well! (^_^) I highly dislike quite a few of the settings on firefox, especially considering they're turned on by default. The setting I abhor is the experiment setting because mozilla is quite literally experimenting on myself and other users. You may have a different perspective on the matter but I find it disgusting that there's nothing overtly telling you that your instance of firefox is different than other peoples just so they can run experiments (technically, on YOU) but I digress. I noticed the experiment option was turned on after I thought I had turned it off. Since I turned it off, I've had to update firefox every time I start it. I happened to look at the settings and noticed that the experiment option was turned back on without my consent or knowledge. After turning it off again, firefox updated once again and guess what, the experiment setting was turned back on. Why is that and how can I prevent that from happening in the future because, again, that's a disgusting practice in my eyes.

Hello, I hope your day is going well! (^_^) I highly dislike quite a few of the settings on firefox, especially considering they're turned on by default. The setting I '''abhor '''is the experiment setting because mozilla is ''quite literally'' experimenting on myself and other users. You may have a different perspective on the matter but I find it '''disgusting''' that there's nothing overtly telling you that your instance of firefox is different than other peoples just so they can run experiments (technically, on YOU) but I digress. I noticed the experiment option was turned on after I thought I had turned it off. Since I turned it off, I've had to update firefox every time I start it. I happened to look at the settings and noticed that the experiment option was turned back on without my consent or knowledge. After turning it off again, firefox updated '''''once again''''' and guess what, the experiment setting was turned back on. Why is that and how can I prevent that from happening in the future because, again, that's a disgusting practice in my eyes.

Alle antwurden (1)

more options

Are you referring to "Allow Firefox to install and run studies" or some other setting? You can create a user.js file in your profile folder with the following to keep applying the setting:

user_pref("app.shield.optoutstudies.enabled", false);


There are many possible causes for settings being reset to default including loading a different profile, refreshing a profile, sync issues, enterprise policies, third-party software, data corruption or hardware failure.