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

I replaced sync data on server, how can i get access to older version of my sync data?

  • 2 replies
  • 1 has this problem
  • 6 views
  • Last reply by cor-el

more options

Hello!

I've a problem. I synced my data from desktop browser and then reinstall browser. After that i pressed Sync now, entered my credentials and i thought that this browser will download my data. But by this deeds i replaced my previous data. How can i restore it?

Hello! I've a problem. I synced my data from desktop browser and then reinstall browser. After that i pressed Sync now, entered my credentials and i thought that this browser will download my data. But by this deeds i replaced my previous data. How can i restore it?

Chosen solution

Hello Mightymad,

Thank you for contacting Mozilla Support. Sorry, about your loss of data.

Sync isn't intended for the purpose of being a "backup" service while the user re-installs their operation system. It was made to synchronize data between Firefox installations on multiple devices, where not every device is devoid of their Firefox installation and data at the same time.

Unfortunately, if you've overwritten the Sync data your previous version is lost.

I wish we had better news for you, but hopefully this gives you a better idea how Sync works, so you're better prepared next time you go to reinstall.

Patrick

Read this answer in context 👍 0

All Replies (2)

more options

Chosen Solution

Hello Mightymad,

Thank you for contacting Mozilla Support. Sorry, about your loss of data.

Sync isn't intended for the purpose of being a "backup" service while the user re-installs their operation system. It was made to synchronize data between Firefox installations on multiple devices, where not every device is devoid of their Firefox installation and data at the same time.

Unfortunately, if you've overwritten the Sync data your previous version is lost.

I wish we had better news for you, but hopefully this gives you a better idea how Sync works, so you're better prepared next time you go to reinstall.

Patrick

more options

Did you previously uninstall Firefox and have removed your personal data (i.e. the Firefox profile folder)?