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Can't log in to Firefox Suync on new computer

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  • 1 has this problem
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  • Last reply by cor-el

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I'm trying to get my new laptop set up, which includes moving all my bookmarks/settings over from the old one. Theoretically, I should be able to do this with Sync. However, it's taking several hours for the security code to be sent, which means it's long expired before I ever see it.

Is there some way to get that code before it expires?

(Please note the time/date stamps in the attached screenshot.)

I'm trying to get my new laptop set up, which includes moving all my bookmarks/settings over from the old one. Theoretically, I should be able to do this with Sync. However, it's taking several hours for the security code to be sent, which means it's long expired before I ever see it. Is there some way to get that code ''before'' it expires? (Please note the time/date stamps in the attached screenshot.)
Attached screenshots

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If Sync isn't working then you can transfer data directly using a removable USB drive.

You can copy certain files with Firefox closed to the current profile folder to transfer or recover personal data. Note that best is to avoid copying a full profile folder.

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).


  • 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;32+) and key4.db (decryption key;58+) for Passwords saved in the Password Manager
    key3.db support ended in 73+; to use key3.db in 58-72, make sure to remove key4.db
  • cert9.db (58+) for (intermediate) 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)