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

Avatar for Username

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
This thread was archived. Please ask a new question if you need help.
Solved Archived

i lost all my data ,i deleted the document file in drivec and the app data by mistake, but im shur the syn was on

Firefox Sync and backup confusion
Denys replied
Alinet
Alinet

i deleted the document file in drive c and the app data by mistake, Im sure the syn was on for more than i can remember and even a few days ago i did the syn again, after the reboot i signed in and did the syn ,there was nothing at all please help me

i deleted the document file in drive c and the app data by mistake, Im sure the syn was on for more than i can remember and even a few days ago i did the syn again, after the reboot i signed in and did the syn ,there was nothing at all please help me

All Replies (1)

Denys
Denys
  • Moderator
  • Top 10 Contributor

Chosen Solution

Hi there,

If you can recover your AppData folder, that would be the best option. If not, I would recommend reinstalling Firefox and signing in to your Mozilla account again.