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

How to import saved passwords from old version firefox to a new one?

  • 4 replies
  • 2 have this problem
  • 1564 views
  • Last reply by FredMcD

more options

Hi I have saved my old Firefox profile and copied it into the new one, but the old profile had key3.db file for passwords, while the new profile has key4.db file. I guess that's why I can't see my old saved passwords in my new version of Firefox which is a lot newer than the old one. What can I do to fix it?

Hi I have saved my old Firefox profile and copied it into the new one, but the old profile had key3.db file for passwords, while the new profile has key4.db file. I guess that's why I can't see my old saved passwords in my new version of Firefox which is a lot newer than the old one. What can I do to fix it?

Chosen solution

If you have new passwords in your profile, this will not work.

In the new profile, remove the password files; key3.db [v58+] key4.db and logins.json : These are the Password files.

Now Copy those same files from the old profile. This must be done with Firefox Closed.

Read this answer in context 👍 1

All Replies (4)

more options

Hi, Please see this article for now https://support.mozilla.org/en-US/questions/800755

more options

Chosen Solution

If you have new passwords in your profile, this will not work.

In the new profile, remove the password files; key3.db [v58+] key4.db and logins.json : These are the Password files.

Now Copy those same files from the old profile. This must be done with Firefox Closed.

more options

Yes, it works now. Thank you. I was overwitting those files before, but I think that it wasn't working because Firefox was open.

more options

Well done. With Any program, never do anything with its files unless you close the program first. If you don't, there could be trouble.