Join us to show up for other Firefox users 🦊. Earn fun badges and Mozilla swag vouchers! Find out more: https://mzl.la/askafox150

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

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

New version 149 download has lost all my passwords

  • 2 replies
  • 0 have this problem
  • 26 views
  • Last reply by cor-el
  • Open

Brian
Brian

The new version thinks I am still on W10. I am on W11. On boot up this morning Firefox has lost all my icons on the web page. All my passwords have gone.

The new version thinks I am still on W10. I am on W11. On boot up this morning Firefox has lost all my icons on the web page. All my passwords have gone.

All Replies (2)

dessertdish
dessertdish

Hello,

Here is some ways to recover it : Old profile data : Look for a folder named "Old Firefox Data" on your desktop. If present, your old profile data, including logins.json (passwords) and key4.db (encryption key), is inside. Restore files : Close Firefox completely, then copy logins.json and key4.db from the "Old Firefox Data" folder and paste them into your current active profile folder, replacing the existing files. Check profiles : Type about:profiles in the Firefox address bar and press Enter. If you see another profile listed, click "Set as default profile" and restart Firefox. Sync Data : If you have a Mozilla account, sign in again to sync, and make sure "Logins and Passwords" is selected.

Modified by dessertdish

cor-el
cor-el
  • Moderator
  • Top 10 Contributor

See also:

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.