I've just downloaded the latest version of FireFox and it's deleted all my bookmarks, and I can't save any new ones!
I can't think of anything more to add..
Additional System Details
- Shockwave Flash 32.0 r0
- User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0
Firefox automatically creates backups of your bookmarks and saves the last 15.
See if these articles can help you:
Restore bookmarks from backup https://support.mozilla.org/en-US/kb/restore-bookmarks-from-backup-or-move-them
Can't add, change or save bookmarks https://support.mozilla.org/en-US/kb/cant-add-change-or-save-bookmarks
I tried that but got a dialog box stating "Unable to process the backup file."...
Check this thread: https://support.mozilla.org/en-US/questions/1257314