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.
Archived

all bookmark backups corrupted after upgrade of firefox

Firefox Bookmarks
cor-el replied
aznemesis
aznemesis

I was nagged to update to the latest version yesterday. Despite having problems in the past when I updated, I went ahead. After updating, I opened Firefox to find all of my bookmarks gone. I've tried restoring from Backup. Every single JSON I try to backup from throws the error that it is "Unable to process backup file." I've tried running Places Maintenance, but get nothing but a "Fetching..." message forever. I ran the latest bookmark file through a JSON validator and got 116 errors. I rolled back to an older version of Firefox, but still get the error. Any suggestions? I mean, other than stop using Firefox, since updates to Chrome and IE don't cause everything to disappear every time I update.

I was nagged to update to the latest version yesterday. Despite having problems in the past when I updated, I went ahead. After updating, I opened Firefox to find all of my bookmarks gone. I've tried restoring from Backup. Every single JSON I try to backup from throws the error that it is "Unable to process backup file." I've tried running Places Maintenance, but get nothing but a "Fetching..." message forever. I ran the latest bookmark file through a JSON validator and got 116 errors. I rolled back to an older version of Firefox, but still get the error. Any suggestions? I mean, other than stop using Firefox, since updates to Chrome and IE don't cause everything to disappear every time I update.

All Replies (1)

cor-el
cor-el
  • Top 25 Contributor
  • Moderator

You can check for problems with the places.sqlite database (bookmarks, history) in the Firefox profile folder.

See also:

If the Places Maintenance extension can't repair the places.sqlite database then remove all places.sqlite file(s) in the Firefox profile folder to make Firefox rebuild the places.sqlite database from the most recent JSON backup in the bookmarkbackups folder.

See also: