Om de ûnderfining foar jo te ferbetterjen is tydlik de funksjonaliteit dan dizze website troch ûnderhâldswurk beheind. Wannear in artikel jo probleem net oplost en jo in fraach stelle wolle, kin ús stipemienskip jo helpe yn @FirefoxSupport op Twitter en /r/firefox op Reddit.

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

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)