On Aug 14th 11 PM ET/Aug 15th 03:00 UTC, due to scheduled Firefox Account server maintenance, users may not be able to sign in or create a new subscription. This is expected to last approximately 30 minutes. Status updates can be found at https://status.vpn.mozilla.org or https://status.relay.firefox.com.

Hilfe durchsuchen

Vorsicht vor Support-Betrug: Wir fordern Sie niemals auf, eine Nummer anzurufen, sie per SMS zu kontaktieren oder persönliche Daten preiszugeben. Bitte melden Sie verdächtige Aktivitäten über die Funktion „Missbrauch melden“.

Learn More

Firefox not syncing new PC with OLD PC open tabs

  • 2 Antworten
  • 1 hat dieses Problem
  • 34 Aufrufe
  • Letzte Antwort von cor-el

more options

I have built a new PC. Both PC's are logged into the same Firefox Account.

The old PC has over 100 tabs open I need to have open on the new PC.

When I sync, it does not open the old PC tabs on the new PC.

I will need to use the old PC C drive eventually as the new PC D drive, but obviously cannot do so until the New PC has all the tabs open from the Old PC.

I cleared the browser console before attempting a sync - there are no error messages generated in the browser console after I tried to sync.

Please advise

I have built a new PC. Both PC's are logged into the same Firefox Account. The old PC has over 100 tabs open I need to have open on the new PC. When I sync, it does not open the old PC tabs on the new PC. I will need to use the old PC C drive eventually as the new PC D drive, but obviously cannot do so until the New PC has all the tabs open from the Old PC. I cleared the browser console before attempting a sync - there are no error messages generated in the browser console after I tried to sync. Please advise

Alle Antworten (2)

more options

The following is based on Sync'ing Firefox on Android with Firefox on Windows.

On Windows, I have a new sidebar called Synced Tabs which lists all the tabs from Firefox on Android. I can open them individually or, if I'm incredibly patient, I can open them all at once by right-clicking the device name and using Open All in Tabs. Do you have that? Here's the article on sidebars for reference:

Use the Firefox Sidebar to access bookmarks, history and synced tabs

I do think you need to either open them or bookmark them before you disconnect your old Firefox, that this list is updated in real-time and isn't stored on your new Firefox.

more options

Note that you can also backup sessionstore.jsonlz4 in the Firefox profile folder to habe a copy of your currently open tabs.

You can copy/backup 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.


  • 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)