Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

Can't log into my account - what's going on?

  • 1 nzaghachinzaghachi
  • 1 nwere nsogbu anwere nsogbu a
  • 3 views
  • Nzaghachi ikpeazụ nke philipp

more options

Hi there!

My father got an SYNC account Computer got broken, so to be 110% sure that his data gonna survive i've checked for the last time (1 hour ago) IS SYNC ON and is it synchronized. It was. I formatted disc, installed Ubuntu, and now when I'm trying to log in to my father's account it says "Unknown account. Sign up". This has put a mad on my face. WHY?! Please, answer me as fast as you can, it is really important for me and even more for my father.

Regards, Pawel, Poland.

edit: removed personal information for your protection. (philipp)

Hi there! My father got an SYNC account Computer got broken, so to be 110% sure that his data gonna survive i've checked for the last time (1 hour ago) IS SYNC ON and is it synchronized. It was. I formatted disc, installed Ubuntu, and now when I'm trying to log in to my father's account it says "Unknown account. Sign up". This has put a mad on my face. WHY?! Please, answer me as fast as you can, it is really important for me and even more for my father. Regards, Pawel, Poland. <sub>edit: removed personal information for your protection. (philipp)</sub>

Edeziri site na philipp

All Replies (1)

more options

hello, firefox 29 and upwards is using a different sync system which isn't compatible with accounts set-up in older versions.

in this case you'd probably have to use a workaround and download the prior firefox 28 version, disable automatic updating for the moment (in options > advanced > update), link it to the old sync account (with username, password & recovery key) and upgrade after you have successfully restored your data this way...

Install an older version of Firefox Sync your Firefox bookmarks, history, passwords and more