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How to add bookmarks, password data into new PC from non functioning PC

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Hi Support Team,

I had a Firefox old & important data (Bookmarks, password..) in non-functioning old PC, but Hard disk has with old folders. Could you please help me to retrieve old data into new PC Firefox browser from hard disk or another method.

Thanks Oshada

Hi Support Team, I had a Firefox old & important data (Bookmarks, password..) in non-functioning old PC, but Hard disk has with old folders. Could you please help me to retrieve old data into new PC Firefox browser from hard disk or another method. Thanks Oshada

Tất cả các câu trả lời (1)

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You can copy certain files with Firefox closed from one profile folder to another/current profile folder to transfer/recover/backup your personal data. Note that best is to avoid restoring a full profile folder and only restore important files that are safe to restore/transfer. Primary 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>

In Windows "AppData" is a hidden folder.


  • bookmarks and history: places.sqlite
  • favicons: favicons.sqlite
  • bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
  • cookies.sqlite for the Cookies
  • formhistory.sqlite for saved autocomplete Form Data
  • logins.json (encrypted logins) and key4.db (encryption key/primary password) for logins saved in the Password Manager
  • cert9.db for certificates stored in the Certificate Manager
  • persdict.dat for words added to the spell checker dictionary
  • permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
  • sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)