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Hello firefox, i had lost my firefox account details.

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Hello, i change my desktop os from windows 8.1 to win 10 for that i had uninstalled firefox details and install new firefox and login with same sync account but i didn't get back my bookmarks, passwords and other stuff. Please check this issue.

Hello, i change my desktop os from windows 8.1 to win 10 for that i had uninstalled firefox details and install new firefox and login with same sync account but i didn't get back my bookmarks, passwords and other stuff. Please check this issue.

All Replies (5)

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Did you have any problems when trying to log into Sync in the new operating system?

Like maybe you needed to reset your Sync password?

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No i did not any problem in login but in problem in to lost data

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Did you remove the Firefox Firefox profile folder when you uninstalled Firefox?

Do you have an "C:\Windows.old" folder?

If you have a "C:\Windows.old" folder with personal data from a previously installed Windows version then you can recover personal data from a previously used profile in this backup.

  • C:\Windows.old\Users\<user name>\AppData\Roaming\Mozilla\Firefox\Profiles

You can copy files like these to the current Firefox profile folder to recover specific data.

  • bookmarks and history: places.sqlite
  • bookmark backups: JSON backups in the bookmarkbackups folder
  • SQLite files like cookies.sqlite (cookies) and formhistory.sqlite (saved form data)
  • logins.json and key3.db (decryption key) for Passwords saved in the Password Manager
  • cert8.db and possibly cert_override.txt for (intermediate) certificates stored in the Certificate Manager
  • persdict.dat for words you added to the spelling checker dictionary
  • permissions.sqlite for Permissions and possibly content-prefs.sqlite for other Site Preferences
  • sessionstore.js for open tabs and pinned tabs and tab groups
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New thread here - https://support.mozilla.org/en-US/questions/1128571 - about changing the "mozilla" password in each of two separate devices and then losing the data on each.

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i dont have mozilla old file.