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Sync your Firefox bookmarks, history, passwords and more

The old version of Sync will no longer be available starting on September 30, 2015, and will be replaced by the Firefox Accounts-based version of Sync. Recent versions of Firefox will automatically guide you through the migration process. You can also follow these instructions to upgrade manually.

Note: This applies to the latest Firefox version which can be downloaded from mozilla.org/firefox.

What's different about the new Sync?

Signing in to the new Sync is easy to do with a Firefox account. No more pairing codes or recovery keys. Just sign in with your email and password and you're set.

How to update to the new Sync

The new version of Sync only works with the latest Firefox and you can't use both the old and new Sync at the same time. So in order to create a Firefox account and sign in to the new Sync you'll have to unlink all of your current devices from the old version of Sync.

On a computer:

  1. Click the menu button New Fx Menu and choose Options.Preferences.
  2. Select the Sync panel.
  3. In the Sync panel click Unlink This Device.
  4. Close the about:preferences page. Any changes you've made will automatically be saved.
  5. Restart Firefox.

On an Android device:

  1. Open your device's Settings app (not Firefox's Settings menu).
  2. Under Accounts or Accounts and Sync, tap on Firefox.
  3. Tap your account name (usually your email address) to view the account settings.
  4. Tap the menu at the top right corner of your device and choose Remove account.

Step 2: Update all of your other devices to the latest Firefox

Step 3: Create a Firefox account

On a computer:

  • Click the menu button New Fx Menu and choose Sign in to Sync and follow the instructions to create your account.

On an Android device:

  • Tap the Menu button (either below the screen on some devices or at the top-right corner of the browser) , select Settings (you may need to tap More first) and then Sync. Follow the instructions to create your account.
Note: You can use the same email address that you used to set up the old Sync.

Step 4: Sign in to Sync on your other devices

On a computer:

  1. Click the menu button New Fx Menu and choose Sign in to Sync.
  2. Click Get Started and then choose the Already have an account? Sign in. link at the bottom.

On an Android device:

  1. Tap the Menu button (either below the screen on some devices or at the top-right corner of the browser) , select Settings (you may need to tap More first) and then Sync.
  2. Tap Get Started and then choose the Already have an account? Sign in. link at the bottom.

What if I don't want to update to the new Sync?

  • While the old version of Sync will continue to work until September 30, 2015, the latest version of Firefox doesn't support adding new devices to the old version of Sync. This means that you won't be able to sync with a new device.
  • Mozilla will continue to host the old version of Sync until September 30th. Self-hosted users will soon be able to run their own instance.
  • Learn more about Firefox accounts

See also

Still having issues?

See Firefox Sync troubleshooting and tips

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underpass

Hello,

With my "production" profile I found that I couldn't display nor use the about:accounts page. After the "Start" screen of Firefox Sync, the only thing I could view was a white rectangle on a grey page. On new profiles the error did not occur.

It took nearly two days to figure out what was happening: the problem was the preference

dom.storage.enabled

that I changed to false some time ago. I had to reset all my changed preferences to find it out.

Moreover: to use it you have to enable cookies for the domain firefox.com. In my profile, all cookies are disabled except those I explicitly allow. And, again, it took me some time to figure out the problem.


Can someone make the same tests? Do you find this information worth to be taken into account for a "Troubleshooting" section of the article?

I will wait for an answer, thanks.

This is good to know. It sounds like this problem occurred after disconnecting old sync. Is that right? If so, maybe this info is better in How do I set up Sync on my computer? Seems that resetting Firefox would fix the issue.

underpass
It sounds like this problem occurred after disconnecting old sync. Is that right?

Thanks for the answer. No, I've never used Sync before (it is a not a feature I need) and I created a "fresh" Firefox account.

I was wondering if a bug would be needed for this issue. I mean: maybe the browser could warn the user that cookies and DOM storage are not enabled.

This article is one of a small number of "Troubleshooting" and "How to" articles that didn't get migrated correctly to add a ShareArticle short link, when bug 766394 was deployed.

See bug 766394 comment 20 from Joni:


Joni Savage 2014-07-14 20:22:02 PDT

Thanks for all your work on this. Alice noticed that a few articles didn't get a new shortlink after the share template was deleted. Should we add them manually or is there an easy bug fix for this?

Here's the thread: https://support.mozilla.org/en-US/forums/knowledge-base-articles/710484

The articles with missing share links are:

There might be more, but I haven't gone through the whole list yet.


One error in the above comment: The markup for the now non-working (empty) ShareArticle template was NOT removed from the above three articles, like it was for the other migrated articles. Note that the "migration" edits were reverted in bug 1038236 so the template markup was added back to all the articles from which it was removed.

In any case, short links are optional. The Short links are optional section of Write articles for the Knowledge Base needs to be updated, since the template is now empty. If anyone wants to add a short link to this article it will probably have to be added manually.

(For the record) The fix for this bug apparently resolved the problem since this article now has a "Share" link:

Revision 94634 contains the Unlink This Device to {button Diconnect…} change, but apparently the change was undone by revision 95293 because that may have been based on the active revision.

https://support.mozilla.org/en-US/kb/how-to-update-to-the-new-firefox-sync/compare?locale=en-US&to=9...

I haven’t set up Sync and see both strings in the product according to search tools, so am not sure what’s correct - should it be changed again?

Come to think of it, maybe a clearer note / warning about editing while new revisions are pending is an idea?

Its click the "Disconnect" button in about:preferences#sync and on the Mobile device its "More..." or the three dot button > "Remove Account" in the Android account settings.

I've changed this from "how to update to the new sync" to simply "sync your firefox bookmarks..."

"Old Sync" went away as of September 30 so there is now only one Sync. Alluding to two versions of Sync will just be confusing to new Sync users.

On second thought, we already have an article on how to set up Sync. We probably don't need this "update" article. Archiving it then before it confuses any users. If anyone disagrees, chime in and we can talk about it.

This article has a "See also" link to How do I recover my old Sync bookmarks?. Since "See also" links are reciprocal, that article is linking to this archived article.

I went ahead and edited the Description for the How do I recover my old Sync bookmarks? article to remove this article from "Related documents" which removed both "See also" links.

P.S. The How do I recover my old Sync bookmarks? article probably needs to be archived as well, since it has this "Needs change" entry:

Old Sync server won't be available indefinitely. Need to archive this when system is deactivated.

Alice I agree, do we need one for the current sync? I have not seen too many loosing bookmarks, unless they wiped their computer.

guigs said

Alice I agree, do we need one for the current sync? I have not seen too many loosing bookmarks, unless they wiped their computer.

Hi, rachel.

I don't use sync but the How do I recover my old Sync bookmarks? article is about accessing your old sync data. It then links to this article to explain how to transfer your synced bookmarks and other data from the old sync server to the new one.

Joni (or another person familiar with sync) should really do a review of all sync articles, to see which should be archived or updated.

AliceWyman said

P.S. The How do I recover my old Sync bookmarks? article probably needs to be archived as well, since it has this "Needs change" entry: Old Sync server won't be available indefinitely. Need to archive this when system is deactivated.

I archived that article just now. See: https://support.mozilla.org/en-US/kb/how-do-i-recover-my-old-sync-bookmarks/discuss/6351 Archived