What exactly does the "Reset Firefox" function do in Firefox? (Firefox->Help->Troubleshooting Information->Reset Firefox) It says that things get reset to their default state -- is there a precise list of things that get reset?

I've been using the same Firefox profile for almost two years, using it across version upgrades. It was recommended that I do a "Reset Firefox", purely for good measure, having amassed a profile across so many versions.

While I'm OK to do this, I don't want to lose my extensions, preferences, history, etc. I've fully backed all of these up with/through extensions "FEBE" and "OPIE". But I'm wondering if, after doing a "Reset Firefox", my restoring of things from my old profile are merely going to bring the outdated/cluttered garbage back to the surface.


See the Reset Firefox – easily fix most problems and Reset Your Firefox articles:

What does the reset feature do?

All of your Firefox settings and personal information are stored in your profile folder. The reset feature works by creating a new profile folder for you while saving your most important data.

Firefox will try to keep the following data:

  • Bookmarks
  • Browsing history
  • Passwords
  • Cookies
  • Web form auto-fill information

The following items and settings will be restored or removed:

  • So does that mean it's essentially just creating a new profile and then attempting to restore a few things? Is "creating a new profile folder" the equivalent of simply creating a new profile? – Coldblackice May 21 '13 at 0:55
  • I think that's what it essentially does.. – Karan May 21 '13 at 1:04
  • 1
    @Coldblackice: Yes, that's what it does - it creates a new profile and only copies the essential things over. Any breakage or slowness stays in the old profile. – Wladimir Palant May 26 '13 at 15:25

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