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!

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.

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

I have used Firefox off and on for several years, but I would like to find a way to delete all my data on all my devices that I have signed into. Then install Firefox and make it like I have never used itl

  • 3 replies
  • 1 has this problem
  • 4 views
  • Last reply by cor-el

more options

I want to start fresh with a new install of Firefox , like it is the first time I have ever installed it. I do not want to refresh, because I will be getting my previous data.

I want to start fresh with a new install of Firefox , like it is the first time I have ever installed it. I do not want to refresh, because I will be getting my previous data.

All Replies (3)

more options

If you are using sync; Shut down sync from here.

Type about:accounts<enter> in the address bar.

[v57+] Type https://accounts.firefox.com/settings<enter> in the address bar.

Delete Account: Look for Delete Account at the bottom of https://accounts.firefox.com/settings

more options

Use these links to locate and remove any profiles.


https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles


Type about:profiles<enter> in the address bar. How many profiles are listed? How many should be there? Also, open the profile folder in your file explorer.


https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update

more options

Firefox uses two locations for the Firefox profile folder. One location for your personal data (e.g. bookmarks) and another location for temporary files like the disk cache.

Location used for the main profile that keeps your personal data (Root Directory on about:profiles).

  • C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>

Location used for the disk cache and other temporary files (Local Directory on about:profiles).

  • C:\Users\<user>\AppData\Local\Mozilla\Firefox\Profiles\<profile>