Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I had enabled firefox sync but when I logged into new device no data was synced into the new machine

  • 1 reply
  • 1 has this problem
  • 33 views
  • Last reply by FredMcD

more options

I had enabled firefox sync in my old device synced all the data and then logged out from that device, Now I logged into new system and checked that the firefox sync is not showing any data at all.

Can anybody help me on this as why this happened and if there is any way to restore that sync data.

I had enabled firefox sync in my old device synced all the data and then logged out from that device, Now I logged into new system and checked that the firefox sync is not showing any data at all. Can anybody help me on this as why this happened and if there is any way to restore that sync data.

All Replies (1)

more options

First, open the sync page of each device/profile and make sure everything is correct. username. password, what to sync . . . .

How many devices/profiles are on your sync?


We need to look at the sync logs. Type about:sync-log<enter> in the address bar of the not syncing unit.

Open the last file created and Copy its contents Now Paste it into this forum.

If the file is too large;

Open a text/word program and load the file. Left-click once. Now <Control> A to highlight everything, then <Control> C to copy it.

Next, have your web browser go to; https://pastebin.com/

Paste <Control> P the content of the file in the window. Note: On the bottom, fill out the boxes as best you can.

Now press Create A New Paste. The page will reload. Copy the new web address, and post it here.