Mozilla released Firefox 67.0 recently and integrated in that release came a -- long-overdue -- feature that assigned unique profiles to each Firefox installation on the system.
The change should not have affected existing Firefox installations and profiles on the system but reports are coming in from all over the Internet that this is not the case for some users of the browser.
Mozilla's implementation assigns a unique profile to any new Firefox installation. That is a good thing for systems with multiple Firefox installations as you don't have to create and assign profiles for these installations manually anymore using the profile manager or other means.
Firefox uses the set profile from that moment on during start so that it is no longer necessary to tell the browser what to do (either manually on start or by using shortcut parameters).
Some Firefox users who upgraded the browser to version 67.0 noticed that it started with a blank profile; all their user data, bookmarks, open tabs, passwords, history, and other data appeared gone.
The problem that these users experienced is that Firefox assigned a new default profile to the installation; this should not have happened, but it appears to have happened to some.
Good news is that the user data is not deleted or gone. All that is needed is to assign the old profile to the installation of Firefox to restore it.
You have two main options to do so, one uses the Firefox interface to change the assigned profile, the second loads it using a parameter that you add to the Firefox shortcut.
The second option forces Firefox to load a specific profile or the profile manager on startup.
Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.
Is there any Disadvantage of using the new “Default-Release” and not the old “Default” Profile?
It is just a name, nothing more.
Ok thx
Thanks [b]very much[/b] Martin for the tip. You make my day.
Me thinks this is a trick to disable my userChrome.css and userContent.css.
Mozilla is getting as bad as Microsoft when it comes to update quality. Luckily, you can disable updates with a group policy.
So, I’m still on 66.0.3 for now, waiting to read about all the problems and hopefully fixes before I update FF.
Excellent info Martin, we all appreciate your insight!
When I first read about the user profile bug I was surprised that I saw no one suggesting going into about:profiles and resetting the old default profile, if it still existed. I kind of figured Mr. Brinkman would enlighten everyone and for once, I was actually right. :)
I didn’t see any profile problems myself and I’m running multiple profiles.
Now they’re not disabling your addons but your entire profile? Good job Mozilla lol
I’m so disappointed with new Firefox, they just introduce more bugs, inconveniences.
I have set a particular site as a home page and Firefox still opens to a blank page. Interestingly If I close Firefox and then straight away use the taskbar to open it, my home page comes up. I am not happy about fiddling with profiles so unless Mozilla comes up with a fix in short order I will move to something more stable.
so intuitive
Originally switched from FF to Chrome when they added the frustrating SSL exceptions pfaff; switched back to FF when I got sick of Google making Chrome do things “implicitly” on their services.
Now I have switched back to Ungoogled Chromium because this change was the excuse I needed. Browsers are both a marvel of engineering and a horrible bloated mess than just need a scorched earth start-from-scratch strategy.
Every time my computer restarts, Firefox gives some error about an old version of Firefox and forces a new profile. Setting the old profile as the default doesn’t fix it. I even went as far as just exporting my bookmarks to HTML, then letting it create a new profile and just using that new profile and importing the old bookmarks, but it still gives error message and forces a new profile on every computer restart. I’m on Firefox 72.0.2 (64-bit).
Can you help with same issue but for Amdroid? AS no about:profiles
Been with FF since 1998
Previoyusly used Sync in accounts
Thx
This happens to me everytime there is an update. And we use Citrix, so I have to do it every morning until Citrix updates the browser for good. I think I have been using Firefox since November 2019 and I had 14 or more profiles. It seems like there is an update every week now, so it has been especially annoying. I don’t want to have to change the profile every time it updates. No other browser has this issue, that I know of. I don’t want to have to go back to Chrome.