Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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

sync code

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

Hi, I have some long code related to firefox. Can you tell me what is this i-xxxxx-xxxxx-xxxxx-xxxxx-xxxxx Thanks

Hi, I have some long code related to firefox. Can you tell me what is this i-xxxxx-xxxxx-xxxxx-xxxxx-xxxxx Thanks

All Replies (2)

The Sync Key (aka Recovery Key) is used to encrypt data for upload, Sync server storage, and download - whenever that data was off of the users devices. As of Firefox 29 it is no longer a user facing feature; IOW, not necessary for the user to deal with.

Firefox 29 and later have a new Sync version that use a Firefox account and only use the name and password and no longer use a separate Sync (recovery) key (the Sync key is automatically derived from the password of the Firefox account).