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
Archived

Transferring old firefox data

darrenjoyce

Hi,

I recently had to perform a clean start on my laptop. When I removed Firefox, it created a folder "old firefox data" with my logins, bookmarks, etc. When I downloaded and reinstalled firefox fresh, I followed the instructions to add the files in the "old firefox data" folder to the new profile folder and restarted firefox, however nonthing changed. My bookmarks were no where to be found nor was anything else from my previous firefox data. Looking for help with this problem.

Hi, I recently had to perform a clean start on my laptop. When I removed Firefox, it created a folder "old firefox data" with my logins, bookmarks, etc. When I downloaded and reinstalled firefox fresh, I followed the instructions to add the files in the "old firefox data" folder to the new profile folder and restarted firefox, however nonthing changed. My bookmarks were no where to be found nor was anything else from my previous firefox data. Looking for help with this problem.

All Replies (2)

darrenjoyce said

When I removed Firefox, it created a folder "old firefox data" with my logins, bookmarks, etc.

Hmm, I haven't heard of that before. Was it an option in the uninstaller?

If you look inside Old Firefox Data, in the profile folder in there, in the bookmarkbackups subfolder, how recent are the files and how many items do they contain? For example, this file was created a few days ago and has 471 items:

bookmarks-2020-09-01_471_gibberish==.jsonlz4