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can not sync

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I can not sync. I click sync but nothing happens. I have a old mac and a new one. I want to sync because I want to bring over the settings from the old mac to the new one. I click sync but absolutely nothing happens.

How do I Begin by saving my current settings on my old Mac to the sync function so I can bring them over to the new Mac?

How do I bring over the info from "sync" to the new Mac? None of this is working for me. I need help please. thanks

I can not sync. I click sync but nothing happens. I have a old mac and a new one. I want to sync because I want to bring over the settings from the old mac to the new one. I click sync but absolutely nothing happens. How do I Begin by saving my current settings on my old Mac to the sync function so I can bring them over to the new Mac? How do I bring over the info from "sync" to the new Mac? None of this is working for me. I need help please. thanks

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If Sync isn't working then you can possibly transfer the files directly via a removeable USB drive.

You can copy certain files with Firefox closed to the current profile folder to recover or transfer personal data.

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


  • 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 (passwords) and key4.db (58+) or key3.db (57 and older) (decryption key) for Passwords saved in the Password Manager
    if you only have key3.db then make sure to remove an existing key4.db
  • cert9.db (58+) or cert8.db (57 and older) for (intermediate) certificates stored in the Certificate Manager
    if you only have cert8.db then make sure to remove an existing cert9.db
  • persdict.dat for words you added to the spelling 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)