Are you exporting the bookmarks to an HTML file? *Bookmarks > Show All Bookmarks > Import & Backup *https://support.mozilla.org/kb/restore-bookmarks-from-backup-or-move-them ---- You can check for problems with the <b>places.sqlite</b> database file (bookmarks, history) in the Firefox profile folder. *Places Maintenance: https://addons.mozilla.org/firefox/addon/places-maintenance/ See also: *http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox *https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file