This evening when I opened firefox, all the tabs from my previous session were there, but all of my bookmarks and history had disappeared. I received an error message, and tried all of the troubleshooting advice on this age: https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional I then tried resetting firefox, and so now all my tabs and theme are gone, but still my bookmarks have not reappeared. I have tried manually creating a new profile, and copying the old files, but that doesn't work either. My firefox is technically out of date because I have an old computer, and I know this might be part of the problem. But I really just want my bookmarks back! Thanks for your help.