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!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Firefox Sync login AND registration not working at all

  • 2 replies
  • 2 have this problem
  • 1 view
  • Last reply by McCoy

more options

pHello together, I wanted to let you guys know that at this moment Firefox Sync is not working at all. I installed a new notebook this morning and was not able to connect to my Sync account - instead got an "unexpected error" warning. So I tried to sync an existing device and this also didn't work. I saw some other threads where people were advised to reset their profile.

I tried both - adding a complete new firefox to an existing profile AND registering a brand new user and both gives me "unexpected error". Tested on Windows and Linux Mint with fresh installed Firefox.

Thanks for your time!

pHello together, I wanted to let you guys know that at this moment Firefox Sync is not working at all. I installed a new notebook this morning and was not able to connect to my Sync account - instead got an "unexpected error" warning. So I tried to sync an existing device and this also didn't work. I saw some other threads where people were advised to reset their profile. I tried both - adding a complete new firefox to an existing profile AND registering a brand new user and both gives me "unexpected error". Tested on Windows and Linux Mint with fresh installed Firefox. Thanks for your time!

All Replies (2)

more options

At the moment there's a Sync "Unexpected error' explosion going on.

'Called for help .......

But we're dealing with different time zones, and it's weekend - it may take a while, so please, hang in there.

more options

Things should be back to normal now   -   would you try again please  ?