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.

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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Lost Passwords due Update-logins.json.corrupt renaming not possible

  • 3 uphendule
  • 0 zinale nkinga
  • 1 view
  • Igcine ukuphendulwa ngu justus.behr1

justus.behr1
justus.behr1
more options

Dear Firefox Support Team,

I am contacting you because I have a problem with lost passwords in my Firefox browser after updating Firefox. I have already tried various methods to recover my passwords, but so far without success.

I have some corrupt logins.json files in my profile folder. So first the newly created one (where no passwords are included with 1kb) logins.json and then logins.json.corrupt, logins.json-1.corrupt and 7 more corrupt files up to number 8 all with 44kb. For handlers.json a total of 13 .corrupt files were created. Tried of course to rename the logins.json.corrupt file to logins.json and restart Firefox. However, after each restart a new empty logins.json file was created with a size of 1 KB and my 44kb file is renamed to corrupt again.

Also copied the key4.db and the corrupt logins.json.corrupt (of course renamed and the corrupt removed) to a new profile but there it becomes the corrupt file again.

Unfortunately there are also no previous versions of the file under properties->previous versions.

I also tried running the script "firefox_decrypt.py" from a GitHub repository to recover my passwords. This also did not produce the desired result. Using Notepad++, the corrupt file unfortunately has only "NULL" values. Is there any other way to get the lost passwords back?

Sincerely, Justus

Dear Firefox Support Team, I am contacting you because I have a problem with lost passwords in my Firefox browser after updating Firefox. I have already tried various methods to recover my passwords, but so far without success. I have some corrupt logins.json files in my profile folder. So first the newly created one (where no passwords are included with 1kb) logins.json and then logins.json.corrupt, logins.json-1.corrupt and 7 more corrupt files up to number 8 all with 44kb. For handlers.json a total of 13 .corrupt files were created. Tried of course to rename the logins.json.corrupt file to logins.json and restart Firefox. However, after each restart a new empty logins.json file was created with a size of 1 KB and my 44kb file is renamed to corrupt again. Also copied the key4.db and the corrupt logins.json.corrupt (of course renamed and the corrupt removed) to a new profile but there it becomes the corrupt file again. Unfortunately there are also no previous versions of the file under properties->previous versions. I also tried running the script "firefox_decrypt.py" from a GitHub repository to recover my passwords. This also did not produce the desired result. Using Notepad++, the corrupt file unfortunately has only "NULL" values. Is there any other way to get the lost passwords back? Sincerely, Justus

All Replies (3)

TechHorse
TechHorse
more options

Is there a logins-backup.json file in the profile folder that you could try renaming? (after making a backup copy of it first)

Terry
Terry
more options

The first article may help. Renaming logins-backup.json (as mentioned in the previous post) may be sufficient. You should close Firefox before doing that.

https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data#w_finding-your-profile-without-opening-firefox

justus.behr1
justus.behr1 Umnikazi wombuzo
more options

TechHorse said
Is there a logins-backup.json file in the profile folder that you could try renaming? (after making a backup copy of it first)

I also think this is great from Firefox, a backup was created but only from the newly created logins.json with 1kb